round 1

.vscode/settings.json

@@ -0,0 +1,3 @@
+{
+    "python.analysis.typeCheckingMode": "basic"
+}

cli/codeflash/cli_cmds/cli.py

@@ -1,13 +1,14 @@
 import logging
-import os
 import sys
 from argparse import SUPPRESS, ArgumentParser, Namespace
+from pathlib import Path
 
 import git
 
 from codeflash.cli_cmds import logging_config
 from codeflash.cli_cmds.cli_common import apologize_and_exit
 from codeflash.cli_cmds.cmd_init import init_codeflash, install_github_actions
+from codeflash.cli_cmds.console import logger
 from codeflash.code_utils import env_utils
 from codeflash.code_utils.config_parser import parse_config_file
 from codeflash.code_utils.git_utils import (
@@ -17,7 +18,6 @@ from codeflash.code_utils.git_utils import (
     get_repo_owner_and_name,
 )
 from codeflash.code_utils.github_utils import get_github_secrets_page_url, require_github_app_or_exit
-from codeflash.cli_cmds.console import logger
 from codeflash.version import __version__ as version
 
 
@@ -104,18 +104,18 @@ def process_and_validate_cmd_args(args: Namespace) -> Namespace:
         logger.error("If you specify a --function, you must specify the --file it is in")
         sys.exit(1)
     if args.file:
-        if not os.path.exists(args.file):
+        if not Path(args.file).exists():
             logger.error(f"File {args.file} does not exist")
             sys.exit(1)
-        args.file = os.path.realpath(args.file)
+        args.file = Path(args.file).resolve()
         if not args.no_pr:
             owner, repo = get_repo_owner_and_name()
             require_github_app_or_exit(owner, repo)
     if args.replay_test:
-        if not os.path.isfile(args.replay_test):
+        if not Path(args.replay_test).is_file():
             logger.error(f"Replay test file {args.replay_test} does not exist")
             sys.exit(1)
-        args.replay_test = os.path.realpath(args.replay_test)
+        args.replay_test = Path(args.replay_test).resolve()
 
     return args
 
@@ -142,11 +142,11 @@ def process_pyproject_config(args: Namespace) -> Namespace:
             or not hasattr(args, key.replace("-", "_"))
         ):
             setattr(args, key.replace("-", "_"), pyproject_config[key])
-    assert args.module_root is not None and os.path.isdir(
-        args.module_root,
+    assert (
+        args.module_root is not None and Path(args.module_root).is_dir()
     ), f"--module-root {args.module_root} must be a valid directory"
-    assert args.tests_root is not None and os.path.isdir(
-        args.tests_root,
+    assert (
+        args.tests_root is not None and Path(args.tests_root).is_dir()
     ), f"--tests-root {args.tests_root} must be a valid directory"
 
     assert not (env_utils.get_pr_number() is not None and not env_utils.ensure_codeflash_api_key()), (
@@ -160,24 +160,23 @@ def process_pyproject_config(args: Namespace) -> Namespace:
     if hasattr(args, "ignore_paths") and args.ignore_paths is not None:
         normalized_ignore_paths = []
         for path in args.ignore_paths:
-            assert os.path.exists(
-                path,
-            ), f"ignore-paths config must be a valid path. Path {path} does not exist"
-            normalized_ignore_paths.append(os.path.realpath(path))
+            path_obj = Path(path)
+            assert path_obj.exists(), f"ignore-paths config must be a valid path. Path {path} does not exist"
+            normalized_ignore_paths.append(path_obj.resolve())
         args.ignore_paths = normalized_ignore_paths
     # Project root path is one level above the specified directory, because that's where the module can be imported from
-    args.module_root = os.path.realpath(args.module_root)
+    args.module_root = Path(args.module_root).resolve()
     # If module-root is "." then all imports are relatives to it.
     # in this case, the ".." becomes outside project scope, causing issues with un-importable paths
     args.project_root = project_root_from_module_root(args.module_root, pyproject_file_path)
-    args.tests_root = os.path.realpath(args.tests_root)
+    args.tests_root = Path(args.tests_root).resolve()
     return handle_optimize_all_arg_parsing(args)
 
 
-def project_root_from_module_root(module_root: str, pyproject_file_path: str) -> str:
-    if os.path.dirname(pyproject_file_path) == module_root:
+def project_root_from_module_root(module_root: Path, pyproject_file_path: Path) -> Path:
+    if pyproject_file_path.parent == module_root:
         return module_root
-    return os.path.realpath(os.path.join(module_root, ".."))
+    return module_root.parent.resolve()
 
 
 def handle_optimize_all_arg_parsing(args: Namespace) -> Namespace:
@@ -203,5 +202,5 @@ def handle_optimize_all_arg_parsing(args: Namespace) -> Namespace:
         # The default behavior of --all is to optimize everything in args.module_root
         args.all = args.module_root
     else:
-        args.all = os.path.realpath(args.all)
+        args.all = Path(args.all).resolve()
     return args

cli/codeflash/cli_cmds/cmd_init.py

@@ -2,11 +2,11 @@ from __future__ import annotations
 
 import ast
 import os
-import pathlib
 import re
 import subprocess
 import sys
 from argparse import Namespace
+from pathlib import Path
 from typing import Optional
 
 import click
@@ -107,7 +107,7 @@ def ask_run_end_to_end_test(args: Namespace) -> None:
 
 
 def collect_setup_info() -> SetupInfo:
-    curdir = os.getcwd()
+    curdir = Path.cwd()
     # Check if the cwd is writable
     if not os.access(curdir, os.W_OK):
         click.echo(
@@ -170,20 +170,22 @@ def collect_setup_info() -> SetupInfo:
     )
 
     if tests_root_answer == create_for_me_option:
-        tests_root = os.path.join(curdir, default_tests_subdir)
-        os.mkdir(tests_root)
-        click.echo(f"✅ Created directory {tests_root}{os.pathsep}{LF}")
+        tests_root = Path(curdir) / default_tests_subdir
+        tests_root.mkdir()
+        click.echo(f"✅ Created directory {tests_root}{os.path.sep}{LF}")
     elif tests_root_answer == custom_dir_option:
         custom_tests_root_answer = inquirer_wrapper_path(
             "path",
-            message=f"Enter the path to your tests directory inside {os.path.abspath('.') + os.path.sep} ",
+            message=f"Enter the path to your tests directory inside {Path(curdir).resolve()}{os.path.sep} ",
             path_type=inquirer.Path.DIRECTORY,
             exists=True,
         )
-        tests_root = custom_tests_root_answer["path"] if custom_tests_root_answer else apologize_and_exit()
+        tests_root = (
+            Path(custom_tests_root_answer["path"]) if custom_tests_root_answer else apologize_and_exit()
+        )
     else:
-        tests_root = tests_root_answer
-    tests_root = os.path.relpath(tests_root, curdir)
+        tests_root = Path(tests_root_answer)
+    tests_root = tests_root.relative_to(curdir)
     ph("cli-tests-root-provided")
 
     # Autodiscover test framework
@@ -224,7 +226,7 @@ def collect_setup_info() -> SetupInfo:
     )
 
 
-def detect_test_framework(curdir, tests_root) -> Optional[str]:
+def detect_test_framework(curdir: Path, tests_root: Path) -> Optional[str]:
     test_framework = None
     pytest_files = ["pytest.ini", "pyproject.toml", "tox.ini", "setup.cfg"]
     pytest_config_patterns = {
@@ -234,9 +236,9 @@ def detect_test_framework(curdir, tests_root) -> Optional[str]:
         "setup.cfg": "[tool:pytest]",
     }
     for pytest_file in pytest_files:
-        file_path = os.path.join(curdir, pytest_file)
-        if os.path.exists(file_path):
-            with open(file_path, encoding="utf8") as file:
+        file_path = curdir / pytest_file
+        if file_path.exists():
+            with file_path.open(encoding="utf8") as file:
                 contents = file.read()
                 if pytest_config_patterns[pytest_file] in contents:
                     test_framework = "pytest"
@@ -244,9 +246,9 @@ def detect_test_framework(curdir, tests_root) -> Optional[str]:
         test_framework = "pytest"
     else:
         # Check if any python files contain a class that inherits from unittest.TestCase
-        for filename in os.listdir(tests_root):
-            if filename.endswith(".py"):
-                with open(os.path.join(tests_root, filename), encoding="utf8") as file:
+        for filename in tests_root.iterdir():
+            if filename.suffix == ".py":
+                with filename.open(encoding="utf8") as file:
                     contents = file.read()
                     try:
                         node = ast.parse(contents)
@@ -271,14 +273,13 @@ def detect_test_framework(curdir, tests_root) -> Optional[str]:
 def check_for_toml_or_setup_file() -> Optional[str]:
     click.echo()
     click.echo("Checking for pyproject.toml or setup.py ...\r", nl=False)
-    curdir = os.getcwd()
-    pyproject_toml_path = os.path.join(curdir, "pyproject.toml")
-    setup_py_path = os.path.join(curdir, "setup.py")
+    curdir = Path.cwd()
+    pyproject_toml_path = curdir / "pyproject.toml"
+    setup_py_path = curdir / "setup.py"
     project_name = None
-    if os.path.exists(pyproject_toml_path):
+    if pyproject_toml_path.exists():
         try:
-            with open(pyproject_toml_path, encoding="utf8") as f:
-                pyproject_toml_content = f.read()
+            pyproject_toml_content = pyproject_toml_path.read_text(encoding="utf8")
             project_name = tomlkit.parse(pyproject_toml_content)["tool"]["poetry"]["name"]
             click.echo(f"✅ I found a pyproject.toml for your project {project_name}.")
             ph("cli-pyproject-toml-found-name")
@@ -286,9 +287,8 @@ def check_for_toml_or_setup_file() -> Optional[str]:
             click.echo("✅ I found a pyproject.toml for your project.")
             ph("cli-pyproject-toml-found")
     else:
-        if os.path.exists(setup_py_path):
-            with open(setup_py_path, encoding="utf8") as f:
-                setup_py_content = f.read()
+        if setup_py_path.exists():
+            setup_py_content = setup_py_path.read_text(encoding="utf8")
             project_name_match = re.search(
                 r"setup\s*\([^)]*?name\s*=\s*['\"](.*?)['\"]",
                 setup_py_content,
@@ -321,11 +321,10 @@ def check_for_toml_or_setup_file() -> Optional[str]:
             new_pyproject_toml = tomlkit.document()
             new_pyproject_toml["tool"] = {"codeflash": {}}
             try:
-                with open(pyproject_toml_path, "w", encoding="utf8") as pyproject_file:
-                    pyproject_file.write(tomlkit.dumps(new_pyproject_toml))
+                pyproject_toml_path.write_text(tomlkit.dumps(new_pyproject_toml), encoding="utf8")
 
                 # Check if the pyproject.toml file was created
-                if os.path.exists(pyproject_toml_path):
+                if pyproject_toml_path.exists():
                     click.echo(
                         f"✅ Created a pyproject.toml file at {pyproject_toml_path}",
                     )
@@ -356,9 +355,9 @@ def install_github_actions() -> None:
         owner, repo_name = get_repo_owner_and_name(repo)
         require_github_app_or_exit(owner, repo_name)
 
-        git_root = repo.git.rev_parse("--show-toplevel")
-        workflows_path = os.path.join(git_root, ".github", "workflows")
-        optimize_yaml_path = os.path.join(workflows_path, "codeflash-optimize.yaml")
+        git_root = Path(repo.git.rev_parse("--show-toplevel"))
+        workflows_path = git_root / ".github" / "workflows"
+        optimize_yaml_path = workflows_path / "codeflash-optimize.yaml"
 
         confirm_creation_yes = inquirer_wrapper(
             inquirer.confirm,
@@ -373,7 +372,7 @@ def install_github_actions() -> None:
             click.echo("⏩️ Exiting workflow creation.")
             ph("cli-github-workflow-skipped")
             apologize_and_exit()
-        os.makedirs(workflows_path, exist_ok=True)
+        workflows_path.mkdir(parents=True, exist_ok=True)
         from importlib.resources import files
 
         py_version = sys.version_info
@@ -387,13 +386,13 @@ def install_github_actions() -> None:
             "{{ python_version }}",
             python_version_string,
         )
-        with open(optimize_yaml_path, "w", encoding="utf8") as optimize_yml_file:
+        with optimize_yaml_path.open("w", encoding="utf8") as optimize_yml_file:
             optimize_yml_file.write(optimize_yml_content)
         click.echo(f"✅ Created {optimize_yaml_path}{LF}")
         click.prompt(
             f"Next, you'll need to add your CODEFLASH_API_KEY as a secret to your GitHub repo.{LF}"
-            + f"Press Enter to open your repo's secrets page at {get_github_secrets_page_url(repo)} ...{LF}"
-            + f"Then, click 'New repository secret' to add your api key with the variable name CODEFLASH_API_KEY.{LF}",
+            f"Press Enter to open your repo's secrets page at {get_github_secrets_page_url(repo)} ...{LF}"
+            f"Then, click 'New repository secret' to add your api key with the variable name CODEFLASH_API_KEY.{LF}",
             default="",
             type=click.STRING,
             prompt_suffix="",
@@ -402,7 +401,7 @@ def install_github_actions() -> None:
         click.launch(get_github_secrets_page_url(repo))
         click.echo(
             "🐙 I opened your Github secrets page! Note: if you see a 404, you probably don't have access to this "
-            + "repo's secrets; ask a repo admin to add it for you, or (not super recommended) you can temporarily "
+            "repo's secrets; ask a repo admin to add it for you, or (not super recommended) you can temporarily "
             f"hard-code your api key into the workflow file.{LF}",
         )
         click.pause()
@@ -410,7 +409,7 @@ def install_github_actions() -> None:
         click.prompt(
             f"Finally, for the workflow to work, you'll need to edit the workflow file to install the right "
             f"Python version and any project dependencies.{LF}"
-            + f"Press Enter to open {optimize_yaml_path} in your editor.{LF}",
+            f"Press Enter to open {optimize_yaml_path} in your editor.{LF}",
             default="",
             type=click.STRING,
             prompt_suffix="",
@@ -419,7 +418,7 @@ def install_github_actions() -> None:
         click.launch(optimize_yaml_path)
         click.echo(
             "📝 I opened the workflow file in your editor! You'll need to edit the steps that install the right Python "
-            + f"version and any project dependencies. See the comments in the file for more details.{LF}",
+            f"version and any project dependencies. See the comments in the file for more details.{LF}",
         )
         click.pause()
         click.echo()
@@ -434,9 +433,9 @@ def install_github_actions() -> None:
 
 # Create or update the pyproject.toml file with the Codeflash dependency & configuration
 def configure_pyproject_toml(setup_info: SetupInfo) -> None:
-    toml_path = os.path.join(os.getcwd(), "pyproject.toml")
+    toml_path = Path.cwd() / "pyproject.toml"
     try:
-        with open(toml_path, encoding="utf8") as pyproject_file:
+        with toml_path.open(encoding="utf8") as pyproject_file:
             pyproject_data = tomlkit.parse(pyproject_file.read())
     except FileNotFoundError:
         click.echo(
@@ -470,7 +469,7 @@ def configure_pyproject_toml(setup_info: SetupInfo) -> None:
     pyproject_data["tool"] = tool_section
 
     click.echo("Writing Codeflash configuration ...\r", nl=False)
-    with open(toml_path, "w", encoding="utf8") as pyproject_file:
+    with toml_path.open("w", encoding="utf8") as pyproject_file:
         pyproject_file.write(tomlkit.dumps(pyproject_data))
     click.echo(f"✅ Added Codeflash configuration to {toml_path}")
     click.echo()
@@ -488,8 +487,8 @@ def install_github_app() -> None:
     else:
         click.prompt(
             f"Finally, you'll need install the Codeflash GitHub app by choosing the repository you want to install Codeflash on.{LF}"
-            + f"I will attempt to open the github app page - https://github.com/apps/codeflash-ai/installations/select_target {LF}"
-            + f"Press Enter to open the page to let you install the app ...{LF}",
+            f"I will attempt to open the github app page - https://github.com/apps/codeflash-ai/installations/select_target {LF}"
+            f"Press Enter to open the page to let you install the app ...{LF}",
             default="",
             type=click.STRING,
             prompt_suffix="",
@@ -601,7 +600,7 @@ def enter_api_key_and_save_to_rc() -> None:
     os.environ["CODEFLASH_API_KEY"] = api_key
 
 
-def create_bubble_sort_file_and_test(args: Namespace) -> None:
+def create_bubble_sort_file_and_test(args: Namespace) -> tuple[str, str]:
     bubble_sort_content = """def sorter(arr):
     for i in range(len(arr)):
         for j in range(len(arr) - 1):
@@ -613,10 +612,10 @@ def create_bubble_sort_file_and_test(args: Namespace) -> None:
 """
     if args.test_framework == "unittest":
         bubble_sort_test_content = f"""import unittest
-from {os.path.basename(args.module_root)}.bubble_sort import sorter
+    from {Path(args.module_root).name}.bubble_sort import sorter
 
-class TestBubbleSort(unittest.TestCase):
-    def test_sort(self):
+    class TestBubbleSort(unittest.TestCase):
+        def test_sort(self):
         input = [5, 4, 3, 2, 1, 0]
         output = sorter(input)
         self.assertEqual(output, [0, 1, 2, 3, 4, 5])
@@ -628,9 +627,9 @@ class TestBubbleSort(unittest.TestCase):
         input = list(reversed(range(100)))
         output = sorter(input)
         self.assertEqual(output, list(range(100)))
-"""
+    """
     elif args.test_framework == "pytest":
-        bubble_sort_test_content = f"""from {os.path.basename(args.module_root)}.bubble_sort import sorter
+        bubble_sort_test_content = f"""from {Path(args.module_root).name}.bubble_sort import sorter
 
 def test_sort():
     input = [5, 4, 3, 2, 1, 0]
@@ -648,15 +647,17 @@ def test_sort():
     else:
         click.echo(f"❌ Unsupported test framework: {args.test_framework}")
         apologize_and_exit()
-    bubble_sort_path = os.path.join(args.module_root, "bubble_sort.py")
-    with open(bubble_sort_path, "w", encoding="utf8") as bubble_sort_file:
-        bubble_sort_file.write(bubble_sort_content)
-    bubble_sort_test_path = os.path.join(args.tests_root, "test_bubble_sort.py")
-    with open(bubble_sort_test_path, "w", encoding="utf8") as bubble_sort_test_file:
-        bubble_sort_test_file.write(bubble_sort_test_content)
+
+    bubble_sort_path = Path(args.module_root) / "bubble_sort.py"
+    bubble_sort_path.write_text(bubble_sort_content, encoding="utf8")
+
+    bubble_sort_test_path = Path(args.tests_root) / "test_bubble_sort.py"
+    bubble_sort_test_path.write_text(bubble_sort_test_content, encoding="utf8")
+
     click.echo(f"✅ Created {bubble_sort_path}")
     click.echo(f"✅ Created {bubble_sort_test_path}")
-    return bubble_sort_path, bubble_sort_test_path
+
+    return str(bubble_sort_path), str(bubble_sort_test_path)
 
 
 def run_end_to_end_test(args: Namespace, bubble_sort_path: str, bubble_sort_test_path: str) -> None:

cli/codeflash/code_utils/code_extractor.py

@@ -1,6 +1,7 @@
 from __future__ import annotations
 
 import ast
+from pathlib import Path
 from typing import TYPE_CHECKING
 
 import libcst as cst
@@ -9,8 +10,8 @@ from libcst.codemod import CodemodContext
 from libcst.codemod.visitors import AddImportsVisitor, GatherImportsVisitor, RemoveImportsVisitor
 from libcst.helpers import calculate_module_and_package
 
-from codeflash.discovery.functions_to_optimize import FunctionParent
 from codeflash.cli_cmds.console import logger
+from codeflash.discovery.functions_to_optimize import FunctionParent
 
 if TYPE_CHECKING:
     from libcst.helpers import ModuleNameAndPackage
@@ -43,9 +44,9 @@ def delete___future___aliased_imports(module_code: str) -> str:
 def add_needed_imports_from_module(
     src_module_code: str,
     dst_module_code: str,
-    src_path: str,
-    dst_path: str,
-    project_root: str,
+    src_path: Path,
+    dst_path: Path,
+    project_root: Path,
     helper_functions: list[FunctionSource] | None = None,
 ) -> str:
     """Add all needed and used source module code imports to the destination module code, and return it."""
@@ -57,13 +58,13 @@ def add_needed_imports_from_module(
     dst_module_and_package: ModuleNameAndPackage = calculate_module_and_package(project_root, dst_path)
 
     dst_context: CodemodContext = CodemodContext(
-        filename=src_path,
+        filename=src_path.name,
         full_module_name=dst_module_and_package.name,
         full_package_name=dst_module_and_package.package,
     )
     gatherer: GatherImportsVisitor = GatherImportsVisitor(
         CodemodContext(
-            filename=src_path,
+            filename=src_path.name,
             full_module_name=src_module_and_package.name,
             full_package_name=src_module_and_package.package,
         ),
@@ -129,7 +130,7 @@ def get_code(
     ):
         return None, set()
 
-    file_path: str = functions_to_optimize[0].file_path
+    file_path: Path = functions_to_optimize[0].file_path
     class_skeleton: set[tuple[int, int | None]] = set()
     contextual_dunder_methods: set[tuple[str, str]] = set()
     target_code: str = ""

cli/codeflash/code_utils/code_replacer.py

@@ -1,7 +1,7 @@
 from __future__ import annotations
 
 import ast
-from typing import IO
+from typing import IO, TYPE_CHECKING
 
 import libcst as cst
 from libcst import FunctionDef
@@ -9,6 +9,9 @@ from libcst import FunctionDef
 from codeflash.code_utils.code_extractor import add_needed_imports_from_module
 from codeflash.discovery.functions_to_optimize import FunctionParent
 
+if TYPE_CHECKING:
+    from pathlib import Path
+
 
 class OptimFunctionCollector(cst.CSTVisitor):
     METADATA_DEPENDENCIES = (cst.metadata.ParentNodeProvider,)
@@ -200,11 +203,11 @@ def replace_functions_and_add_imports(
     source_code: str,
     function_names: list[str],
     optimized_code: str,
-    file_path_of_module_with_function_to_optimize: str,
-    module_abspath: str,
+    file_path_of_module_with_function_to_optimize: Path,
+    module_abspath: Path,
     preexisting_objects: list[tuple[str, list[FunctionParent]]],
     contextual_functions: set[tuple[str, str]],
-    project_root_path: str,
+    project_root_path: Path,
 ) -> str:
     return add_needed_imports_from_module(
         optimized_code,
@@ -224,11 +227,11 @@ def replace_functions_and_add_imports(
 def replace_function_definitions_in_module(
     function_names: list[str],
     optimized_code: str,
-    file_path_of_module_with_function_to_optimize: str,
-    module_abspath: str,
+    file_path_of_module_with_function_to_optimize: Path,
+    module_abspath: Path,
     preexisting_objects: list[tuple[str, list[FunctionParent]]],
     contextual_functions: set[tuple[str, str]],
-    project_root_path: str,
+    project_root_path: Path,
 ) -> bool:
     """:param function_names: List of qualified (not fully qualified) function names (function_name or
     class_name.method_name).
@@ -241,8 +244,7 @@ def replace_function_definitions_in_module(
     :return:
     """
     file: IO[str]
-    with open(module_abspath, encoding="utf8") as file:
-        source_code: str = file.read()
+    source_code: str = module_abspath.read_text(encoding="utf8")
     new_code: str = replace_functions_and_add_imports(
         source_code,
         function_names,
@@ -255,8 +257,7 @@ def replace_function_definitions_in_module(
     )
     if is_zero_diff(source_code, new_code):
         return False
-    with open(module_abspath, "w", encoding="utf8") as file:
-        file.write(new_code)
+    module_abspath.write_text(new_code, encoding="utf8")
     return True
 
 

cli/codeflash/code_utils/code_utils.py

@@ -1,27 +1,26 @@
 from __future__ import annotations
 
 import ast
-from codeflash.cli_cmds.console import logger
 import os
 import site
 from tempfile import TemporaryDirectory
 
-
-def module_name_from_file_path(file_path: str, project_root_path: str) -> str:
-    relative_path = os.path.relpath(file_path, project_root_path)
-    module_path = relative_path.replace(os.sep, ".")
-    if module_path.lower().endswith(".py"):
-        module_path = module_path[:-3]
-    return module_path
+from codeflash.cli_cmds.console import logger
+from pathlib import Path
 
 
-def file_path_from_module_name(module_name: str, project_root_path: str) -> str:
-    """Get file path from module path"""
-    return os.path.join(project_root_path, module_name.replace(".", os.sep) + ".py")
+def module_name_from_file_path(file_path: Path, project_root_path: Path) -> str:
+    relative_path = file_path.relative_to(project_root_path)
+    return relative_path.with_suffix("").as_posix().replace("/", ".")
+
+
+def file_path_from_module_name(module_name: str, project_root_path: Path) -> Path:
+    """Get file path from module path."""
+    return project_root_path / (module_name.replace(".", os.sep) + ".py")
 
 
 def get_imports_from_file(
-    file_path: str | None = None,
+    file_path: Path | None = None,
     file_string: str | None = None,
     file_ast: ast.AST | None = None,
 ) -> list[ast.Import | ast.ImportFrom]:
@@ -29,19 +28,18 @@ def get_imports_from_file(
         sum([file_path is not None, file_string is not None, file_ast is not None]) == 1
     ), "Must provide exactly one of file_path, file_string, or file_ast"
     if file_path:
-        with open(file_path, encoding="utf8") as file:
+        with file_path.open(encoding="utf8") as file:
             file_string = file.read()
     if file_ast is None:
+        if file_string is None:
+            logger.error("file_string cannot be None when file_ast is not provided")
+            return []
         try:
             file_ast = ast.parse(file_string)
         except SyntaxError as e:
             logger.exception(f"Syntax error in code: {e}")
             return []
-    imports = []
-    for node in ast.walk(file_ast):
-        if isinstance(node, (ast.Import, ast.ImportFrom)):
-            imports.append(node)
-    return imports
+    return [node for node in ast.walk(file_ast) if isinstance(node, (ast.Import, ast.ImportFrom))]
 
 
 def get_all_function_names(code: str) -> tuple[bool, list[str]]:
@@ -51,34 +49,27 @@ def get_all_function_names(code: str) -> tuple[bool, list[str]]:
         logger.exception(f"Syntax error in code: {e}")
         return False, []
 
-    function_names = []
-    for node in ast.walk(module):
-        if isinstance(node, (ast.FunctionDef, ast.AsyncFunctionDef)):
-            function_names.append(node.name)
+    function_names = [
+        node.name for node in ast.walk(module) if isinstance(node, (ast.FunctionDef, ast.AsyncFunctionDef))
+    ]
     return True, function_names
 
 
-def get_run_tmp_file(file_path: str) -> str:
+def get_run_tmp_file(file_path: Path) -> Path:
     if not hasattr(get_run_tmp_file, "tmpdir"):
         get_run_tmp_file.tmpdir = TemporaryDirectory(prefix="codeflash_")
-    return os.path.join(get_run_tmp_file.tmpdir.name, file_path)
+    return Path(get_run_tmp_file.tmpdir.name) / file_path
 
 
-def path_belongs_to_site_packages(file_path: str) -> bool:
-    site_packages = site.getsitepackages()
-    for site_package_path in site_packages:
-        if file_path.startswith(site_package_path + os.sep):
-            return True
-    return False
+def path_belongs_to_site_packages(file_path: Path) -> bool:
+    site_packages = [Path(p) for p in site.getsitepackages()]
+    return any(file_path.resolve().is_relative_to(site_package_path) for site_package_path in site_packages)
 
 
-def is_class_defined_in_file(class_name: str, file_path: str) -> bool:
-    if not os.path.exists(file_path):
+def is_class_defined_in_file(class_name: str, file_path: Path) -> bool:
+    if not file_path.exists():
         return False
-    with open(file_path) as file:
+    with file_path.open(encoding="utf8") as file:
         source = file.read()
     tree = ast.parse(source)
-    for node in ast.walk(tree):
-        if isinstance(node, ast.ClassDef) and node.name == class_name:
-            return True
-    return False
+    return any(isinstance(node, ast.ClassDef) and node.name == class_name for node in ast.walk(tree))

cli/codeflash/code_utils/config_parser.py

@@ -1,56 +1,53 @@
-import os
+from __future__ import annotations
+
+from pathlib import Path
 from typing import Any
 
 import tomlkit
 
 
-def find_pyproject_toml(config_file=None):
+def find_pyproject_toml(config_file: Path | None = None) -> Path:
     # Find the pyproject.toml file on the root of the project
 
     if config_file is not None:
-        if not config_file.lower().endswith(".toml"):
-            raise ValueError(
-                f"Config file {config_file} is not a valid toml file. Please recheck the path to pyproject.toml",
-            )
-        if not os.path.exists(config_file):
-            raise ValueError(
-                f"Config file {config_file} does not exist. Please recheck the path to pyproject.toml",
-            )
+        config_file = Path(config_file)
+        if config_file.suffix.lower() != ".toml":
+            msg = f"Config file {config_file} is not a valid toml file. Please recheck the path to pyproject.toml"
+            raise ValueError(msg)
+        if not config_file.exists():
+            msg = f"Config file {config_file} does not exist. Please recheck the path to pyproject.toml"
+            raise ValueError(msg)
         return config_file
-
     else:
-        dir_path = os.getcwd()
+        dir_path = Path.cwd()
 
-        while os.path.dirname(dir_path) != dir_path:
-            config_file = os.path.join(dir_path, "pyproject.toml")
-            if os.path.exists(config_file):
+        while dir_path != dir_path.parent:
+            config_file = dir_path / "pyproject.toml"
+            if config_file.exists():
                 return config_file
             # Search for pyproject.toml in the parent directories
-            dir_path = os.path.dirname(dir_path)
-        raise ValueError(
-            f"Could not find pyproject.toml in the current directory {os.getcwd()} or any of the parent directories. Please create it by running `poetry init`, or pass the path to pyproject.toml with the --config-file argument.",
-        )
+            dir_path = dir_path.parent
+        msg = f"Could not find pyproject.toml in the current directory {Path.cwd()} or any of the parent directories. Please create it by running `poetry init`, or pass the path to pyproject.toml with the --config-file argument."
+
+        raise ValueError(msg)
 
 
-def parse_config_file(config_file_path: str = None) -> tuple[dict[str, Any], str]:
+def parse_config_file(config_file_path: Path | None = None) -> tuple[dict[str, Any], Path]:
     config_file_path = find_pyproject_toml(config_file_path)
     try:
-        with open(config_file_path, "rb") as f:
+        with config_file_path.open("rb") as f:
             data = tomlkit.parse(f.read())
     except tomlkit.exceptions.ParseError as e:
-        raise ValueError(
-            f"Error while parsing the config file {config_file_path}. Please recheck the file for syntax errors. Error: {e}",
-        )
+        msg = f"Error while parsing the config file {config_file_path}. Please recheck the file for syntax errors. Error: {e}"
+        raise ValueError(msg) from e
 
     try:
         tool = data["tool"]
         assert isinstance(tool, dict)
         config = tool["codeflash"]
-    except tomlkit.exceptions.NonExistentKey:
-        raise ValueError(
-            f"Could not find the 'codeflash' block in the config file {config_file_path}. "
-            f"Please run 'codeflash init' to create the config file.",
-        )
+    except tomlkit.exceptions.NonExistentKey as e:
+        msg = f"Could not find the 'codeflash' block in the config file {config_file_path}. Please run 'codeflash init' to create the config file."
+        raise ValueError(msg) from e
     assert isinstance(config, dict)
 
     # default values:
@@ -79,9 +76,7 @@ def parse_config_file(config_file_path: str = None) -> tuple[dict[str, Any], str
             config[key] = bool_keys[key]
     for key in path_keys:
         if key in config:
-            config[key] = os.path.realpath(
-                os.path.join(os.path.dirname(config_file_path), config[key]),
-            )
+            config[key] = str((Path(config_file_path).parent / Path(config[key])).resolve())
     for key in list_str_keys:
         if key in config:
             config[key] = [str(cmd) for cmd in config[key]]
@@ -90,10 +85,7 @@ def parse_config_file(config_file_path: str = None) -> tuple[dict[str, Any], str
 
     for key in path_list_keys:
         if key in config:
-            config[key] = [
-                os.path.realpath(os.path.join(os.path.dirname(config_file_path), path))
-                for path in config[key]
-            ]
+            config[key] = [(Path(config_file_path).parent / path).resolve() for path in config[key]]
         else:  # Default to empty list
             config[key] = []
 

cli/codeflash/code_utils/formatter.py

@@ -1,28 +1,31 @@
-from codeflash.cli_cmds.console import logger
-import os.path
+from __future__ import annotations
+
+import os
 import shlex
 import subprocess
+from pathlib import Path
 
 import isort
 
+from codeflash.cli_cmds.console import logger
+
 
 def format_code(
     formatter_cmds: list[str],
-    path: str,
-) -> str:
+    path: Path,
+) -> str | None:
     # TODO: Only allow a particular whitelist of formatters here to prevent arbitrary code execution
-    if not os.path.exists(path):
+    if not path.exists():
         logger.error(f"File {path} does not exist. Cannot format the file.")
         return None
     if formatter_cmds[0].lower() == "disabled":
-        with open(path, encoding="utf8") as f:
-            new_code = f.read()
+        new_code = path.read_text(encoding="utf8")
         return new_code
     file_token = "$file"
 
     for command in formatter_cmds:
         formatter_cmd_list = shlex.split(command, posix=os.name != "nt")
-        formatter_cmd_list = [path if chunk == file_token else chunk for chunk in formatter_cmd_list]
+        formatter_cmd_list = [str(path) if chunk == file_token else chunk for chunk in formatter_cmd_list]
         logger.info(f"Formatting code with {' '.join(formatter_cmd_list)} ...")
 
         try:
@@ -40,8 +43,7 @@ def format_code(
         else:
             logger.error(f"Failed to format code with {' '.join(formatter_cmd_list)}")
 
-    with open(path, encoding="utf8") as f:
-        new_code = f.read()
+    new_code = path.read_text(encoding="utf8")
 
     return new_code
 

cli/codeflash/code_utils/git_utils.py

@@ -1,9 +1,9 @@
 from __future__ import annotations
-from codeflash.cli_cmds.console import logger
-import os
+
 import sys
 import time
 from io import StringIO
+from pathlib import Path
 from typing import Optional
 
 import git
@@ -12,10 +12,11 @@ from git import Repo
 from unidiff import PatchSet
 
 from codeflash.cli_cmds.cli_common import inquirer_wrapper
+from codeflash.cli_cmds.console import logger
 
 
 def get_git_diff(
-    repo_directory: str = os.getcwd(),
+    repo_directory: Path = Path.cwd(),
     uncommitted_changes: bool = False,
 ) -> dict[str, list[int]]:
     repository = git.Repo(repo_directory, search_parent_directories=True)
@@ -37,11 +38,12 @@ def get_git_diff(
     patch_set = PatchSet(StringIO(uni_diff_text))
     change_list: dict[str, list[int]] = {}  # list of changes
     for patched_file in patch_set:
-        file_path: str = patched_file.path  # file name
-        if not file_path.endswith(".py"):
+        file_path: Path = Path(patched_file.path)
+        if file_path.suffix != ".py":
             continue
-        file_path = os.path.join(repository.working_dir, file_path)
-        logger.debug("file name :" + file_path)
+        file_path = Path(repository.working_dir) / file_path
+        logger.debug(f"file name: {file_path}")
+
         add_line_no: list[int] = [
             line.target_line_no
             for hunk in patched_file
@@ -49,15 +51,16 @@ def get_git_diff(
             if line.is_added and line.value.strip() != ""
         ]  # the row number of deleted lines
 
-        logger.debug("added lines : " + str(add_line_no))
+        logger.debug(f"added lines: {add_line_no}")
+
         del_line_no: list[int] = [
             line.source_line_no
             for hunk in patched_file
             for line in hunk
             if line.is_removed and line.value.strip() != ""
-        ]  # the row number of added liens
+        ]  # the row number of added lines
 
-        logger.debug("deleted lines : " + str(del_line_no))
+        logger.debug(f"deleted lines: {del_line_no}")
 
         change_list[file_path] = add_line_no
     return change_list

cli/codeflash/discovery/discover_unit_tests.py

@@ -1,15 +1,16 @@
-from codeflash.cli_cmds.console import logger
 import os
 import re
 import shlex
 import unittest
 from collections import defaultdict
 from multiprocessing import Process, Queue
+from pathlib import Path
 from typing import Dict, List, Optional, Tuple
 
 import jedi
 from pydantic.dataclasses import dataclass
 
+from codeflash.cli_cmds.console import logger
 from codeflash.code_utils.code_utils import module_name_from_file_path
 from codeflash.verification.test_results import TestType
 from codeflash.verification.verification_utils import TestConfig
@@ -139,7 +140,7 @@ def discover_tests_unittest(
     cfg: TestConfig,
     discover_only_these_tests: Optional[List[str]] = None,
 ) -> Dict[str, List[FunctionCalledInTest]]:
-    tests_root = cfg.tests_root
+    tests_root = Path(cfg.tests_root)
     loader = unittest.TestLoader()
     tests = loader.discover(str(tests_root))
     file_to_test_map = defaultdict(list)
@@ -151,18 +152,18 @@ def discover_tests_unittest(
             _test.__class__.__qualname__,
         )
 
-        _test_module_path = _test_module.replace(".", os.sep)
-        _test_module_path = os.path.normpath(os.path.join(str(tests_root), _test_module_path) + ".py")
-        if not os.path.exists(_test_module_path) or (
-            discover_only_these_tests and _test_module_path not in discover_only_these_tests
+        _test_module_path = Path(_test_module.replace(".", os.sep)).with_suffix(".py")
+        _test_module_path = tests_root / _test_module_path
+        if not _test_module_path.exists() or (
+            discover_only_these_tests and str(_test_module_path) not in discover_only_these_tests
         ):
             return None
-        if "__replay_test" in _test_module_path:
+        if "__replay_test" in str(_test_module_path):
             test_type = TestType.REPLAY_TEST
         else:
             test_type = TestType.EXISTING_UNIT_TEST
         return TestsInFile(
-            test_file=_test_module_path,
+            test_file=str(_test_module_path),
             test_suite=_test_suite_name,
             test_function=_test_function,
             test_type=test_type,
@@ -186,11 +187,11 @@ def discover_tests_unittest(
                             continue
                         details = get_test_details(test_2)
                         if details is not None:
-                            file_to_test_map[details.test_file].append(details)
+                            file_to_test_map[str(details.test_file)].append(details)
                 else:
                     details = get_test_details(test)
                     if details is not None:
-                        file_to_test_map[details.test_file].append(details)
+                        file_to_test_map[str(details.test_file)].append(details)
     return process_test_files(file_to_test_map, cfg)
 
 

cli/codeflash/discovery/functions_to_optimize.py

@@ -128,7 +128,7 @@ class FunctionToOptimize:
     """
 
     function_name: str
-    file_path: str
+    file_path: Path
     parents: list[FunctionParent]  # list[ClassDef | FunctionDef | AsyncFunctionDef]
     starting_line: Optional[int] = None
     ending_line: Optional[int] = None
@@ -150,20 +150,20 @@ class FunctionToOptimize:
     def qualified_name(self) -> str:
         return self.function_name if self.parents == [] else f"{self.parents[0].name}.{self.function_name}"
 
-    def qualified_name_with_modules_from_root(self, project_root_path: str) -> str:
+    def qualified_name_with_modules_from_root(self, project_root_path: Path) -> str:
         return f"{module_name_from_file_path(self.file_path, project_root_path)}.{self.qualified_name}"
 
 
 def get_functions_to_optimize(
     optimize_all: str | None,
     replay_test: str | None,
-    file: str | None,
+    file: Path | None,
     only_get_this_function: str | None,
     test_cfg: TestConfig,
-    ignore_paths: list[str],
-    project_root: str,
-    module_root: str,
-) -> tuple[dict[str, list[FunctionToOptimize]], int]:
+    ignore_paths: list[Path],
+    project_root: Path,
+    module_root: Path,
+) -> tuple[dict[Path, list[FunctionToOptimize]], int]:
     assert (
         sum(
             [  # Ensure only one of the options is provided
@@ -191,9 +191,8 @@ def get_functions_to_optimize(
         if only_get_this_function is not None:
             split_function = only_get_this_function.split(".")
             if len(split_function) > 2:
-                raise ValueError(
-                    "Function name should be in the format 'function_name' or 'class_name.function_name'",
-                )
+                msg = "Function name should be in the format 'function_name' or 'class_name.function_name'"
+                raise ValueError(msg)
             if len(split_function) == 2:
                 class_name, only_function_name = split_function
             else:
@@ -206,10 +205,8 @@ def get_functions_to_optimize(
                 ):
                     found_function = fn
             if found_function is None:
-                raise ValueError(
-                    f"Function {only_function_name} not found in file {file} or"
-                    f" the function does not have a 'return' statement.",
-                )
+                msg = f"Function {only_function_name} not found in file {file} or the function does not have a 'return' statement."
+                raise ValueError(msg)
             functions[file] = [found_function]
     else:
         logger.info("Finding all functions modified in the current git diff ...")
@@ -229,64 +226,60 @@ def get_functions_to_optimize(
 def get_functions_within_git_diff() -> dict[str, list[FunctionToOptimize]]:
     modified_lines: dict[str, list[int]] = get_git_diff(uncommitted_changes=False)
     modified_functions: dict[str, list[FunctionToOptimize]] = {}
-    for path in modified_lines:
-        if not os.path.exists(path):
+    for path_str in modified_lines:
+        path = Path(path_str)
+        if not path.exists():
             continue
-        with open(path, encoding="utf8") as f:
+        with path.open(encoding="utf8") as f:
             file_content = f.read()
             try:
                 wrapper = cst.metadata.MetadataWrapper(cst.parse_module(file_content))
             except Exception as e:
                 logger.exception(e)
                 continue
-            function_lines = FunctionVisitor(file_path=path)
+            function_lines = FunctionVisitor(file_path=str(path))
             wrapper.visit(function_lines)
-            modified_functions[path] = [
+            modified_functions[str(path)] = [
                 function_to_optimize
                 for function_to_optimize in function_lines.functions
                 if (start_line := function_to_optimize.starting_line) is not None
                 and (end_line := function_to_optimize.ending_line) is not None
-                and any(start_line <= line <= end_line for line in modified_lines[path])
+                and any(start_line <= line <= end_line for line in modified_lines[path_str])
             ]
     return modified_functions
 
 
-def get_all_files_and_functions(module_root_path: str) -> dict[str, list[FunctionToOptimize]]:
+def get_all_files_and_functions(module_root_path: Path) -> dict[str, list[FunctionToOptimize]]:
     functions: dict[str, list[FunctionToOptimize]] = {}
-    for root, dirs, files in os.walk(module_root_path):
-        for file in files:
-            if not file.endswith(".py"):
-                continue
-            file_path = os.path.join(root, file)
-
-            # Find all the functions in the file
-            functions.update(find_all_functions_in_file(file_path))
+    module_root_path = Path(module_root_path)
+    for file_path in module_root_path.rglob("*.py"):
+        # Find all the functions in the file
+        functions.update(find_all_functions_in_file(str(file_path)))
     # Randomize the order of the files to optimize to avoid optimizing the same file in the same order every time.
     # Helpful if an optimize-all run is stuck and we restart it.
     files_list = list(functions.items())
     random.shuffle(files_list)
-    functions_shuffled = dict(files_list)
-    return functions_shuffled
+    return dict(files_list)
 
 
-def find_all_functions_in_file(file_path: str) -> dict[str, list[FunctionToOptimize]]:
+def find_all_functions_in_file(file_path: Path) -> dict[str, list[FunctionToOptimize]]:
     functions: dict[str, list[FunctionToOptimize]] = {}
-    with open(file_path, encoding="utf8") as f:
+    with file_path.open(encoding="utf8") as f:
         try:
             ast_module = ast.parse(f.read())
         except Exception as e:
             logger.exception(e)
             return functions
-        function_name_visitor = FunctionWithReturnStatement(file_path)
+        function_name_visitor = FunctionWithReturnStatement(str(file_path))
         function_name_visitor.visit(ast_module)
-        functions[file_path] = function_name_visitor.functions
+        functions[str(file_path)] = function_name_visitor.functions
     return functions
 
 
 def get_all_replay_test_functions(
     replay_test: str,
     test_cfg: TestConfig,
-    project_root_path: str,
+    project_root_path: Path,
 ) -> dict[str, list[FunctionToOptimize]]:
     function_tests = discover_unit_tests(test_cfg, discover_only_these_tests=[replay_test])
     # Get the absolute file paths for each function, excluding class name if present
@@ -303,7 +296,7 @@ def get_all_replay_test_functions(
             if module_path_parts
             and is_class_defined_in_file(
                 module_path_parts[-1],
-                os.path.join(project_root_path, *module_path_parts[:-1]) + ".py",
+                str(Path(project_root_path, *module_path_parts[:-1])) + ".py",
             )
             else None
         )
@@ -314,7 +307,7 @@ def get_all_replay_test_functions(
         else:
             function = function_name
             file_path_parts = module_path_parts
-        file_path = os.path.join(project_root_path, *file_path_parts) + ".py"
+        file_path = Path(project_root_path, *file_path_parts).with_suffix(".py")
         file_to_functions_map[file_path].append((function, function_name, class_name))
     for file_path, functions in file_to_functions_map.items():
         all_valid_functions: dict[str, list[FunctionToOptimize]] = find_all_functions_in_file(
@@ -349,8 +342,7 @@ def ignored_submodule_paths(module_root: str) -> list[str]:
     if is_git_repo(module_root):
         git_repo = git.Repo(module_root, search_parent_directories=True)
         return [
-            os.path.realpath(os.path.join(git_repo.working_tree_dir, submodule.path))
-            for submodule in git_repo.submodules
+            Path(git_repo.working_tree_dir, submodule.path).resolve() for submodule in git_repo.submodules
         ]
     return []
 
@@ -358,7 +350,7 @@ def ignored_submodule_paths(module_root: str) -> list[str]:
 class TopLevelFunctionOrMethodVisitor(ast.NodeVisitor):
     def __init__(
         self,
-        file_name: str,
+        file_name: Path,
         function_or_method_name: str,
         class_name: str | None = None,
         line_no: int | None = None,
@@ -418,7 +410,7 @@ class TopLevelFunctionOrMethodVisitor(ast.NodeVisitor):
 
 
 def inspect_top_level_functions_or_methods(
-    file_name: str,
+    file_name: Path,
     function_or_method_name: str,
     class_name: str | None = None,
     line_no: int | None = None,
@@ -449,11 +441,11 @@ def inspect_top_level_functions_or_methods(
 def filter_functions(
     modified_functions: dict[str, list[FunctionToOptimize]],
     tests_root: str,
-    ignore_paths: list[str],
+    ignore_paths: list[Path],
     project_root: str,
     module_root: str,
     disable_logs: bool = False,
-) -> tuple[dict[str, list[FunctionToOptimize]], int]:
+) -> tuple[dict[Path, list[FunctionToOptimize]], int]:
     blocklist_funcs = get_blacklisted_functions()
     # Remove any function that we don't want to optimize
 
@@ -522,37 +514,33 @@ def filter_functions(
 
 
 def filter_files_optimized(
-    file_path: str,
-    tests_root: str,
-    ignore_paths: list[str],
-    module_root: str,
+    file_path: Path,
+    tests_root: Path,
+    ignore_paths: list[Path],
+    module_root: Path,
 ) -> bool:
     """Optimized version of the filter_functions function above.
+
     Takes in file paths and returns the count of files that are to be optimized.
     """
     submodule_paths = None
-    if file_path.startswith(tests_root + os.sep):
+    if file_path.is_relative_to(tests_root):
         return False
     if file_path in ignore_paths or any(
-        file_path.startswith(ignore_path + os.sep) for ignore_path in ignore_paths
+        file_path.is_relative_to(ignore_path) for ignore_path in ignore_paths
     ):
         return False
     if path_belongs_to_site_packages(file_path):
         return False
-    if not file_path.startswith(module_root + os.sep):
+    if not file_path.is_relative_to(module_root):
         return False
     if submodule_paths is None:
         submodule_paths = ignored_submodule_paths(module_root)
-    if file_path in submodule_paths or any(
-        file_path.startswith(submodule_path + os.sep) for submodule_path in submodule_paths
-    ):
-        return False
-
-    return True
+    return not (
+        file_path in submodule_paths
+        or any(file_path.is_relative_to(submodule_path) for submodule_path in submodule_paths)
+    )
 
 
-def function_has_return_statement(function_node: Union[FunctionDef, AsyncFunctionDef]) -> bool:
-    for node in ast.walk(function_node):
-        if isinstance(node, ast.Return):
-            return True
-    return False
+def function_has_return_statement(function_node: FunctionDef | AsyncFunctionDef) -> bool:
+    return any(isinstance(node, ast.Return) for node in ast.walk(function_node))

cli/codeflash/models/models.py

@@ -1,5 +1,6 @@
 from __future__ import annotations
 
+from pathlib import Path
 from typing import Any, Generator, Iterator, Optional
 
 from jedi.api.classes import Name
@@ -17,7 +18,7 @@ from codeflash.verification.test_results import TestResults, TestType
 
 @dataclass(frozen=True, config={"arbitrary_types_allowed": True})
 class FunctionSource:
-    file_path: str
+    file_path: Path
     qualified_name: str
     fully_qualified_name: str
     only_function_name: str
@@ -55,7 +56,7 @@ class GeneratedTestsList(BaseModel):
 
 
 class TestFile(BaseModel):
-    instrumented_file_path: str
+    instrumented_file_path: Path
     original_file_path: Optional[str] = None
     original_source: Optional[str] = None
     test_type: TestType

cli/codeflash/optimization/function_context.py

@@ -4,16 +4,20 @@ import ast
 import os
 import re
 from collections import defaultdict
+from typing import TYPE_CHECKING
 
 import jedi
 import tiktoken
 from jedi.api.classes import Name
 
+from codeflash.cli_cmds.console import logger
 from codeflash.code_utils.code_extractor import get_code
 from codeflash.code_utils.code_utils import module_name_from_file_path, path_belongs_to_site_packages
 from codeflash.discovery.functions_to_optimize import FunctionParent, FunctionToOptimize
 from codeflash.models.models import FunctionSource
-from codeflash.cli_cmds.console import logger
+
+if TYPE_CHECKING:
+    from pathlib import Path
 
 
 def belongs_to_class(name: Name, class_name: str) -> bool:
@@ -36,12 +40,11 @@ def belongs_to_function(name: Name, function_name: str) -> bool:
 def get_type_annotation_context(
     function: FunctionToOptimize,
     jedi_script: jedi.Script,
-    project_root_path: str,
+    project_root_path: Path,
 ) -> list[FunctionSource]:
     function_name: str = function.function_name
-    file_path: str = function.file_path
-    with open(file_path, encoding="utf8") as file:
-        file_contents: str = file.read()
+    file_path: Path = function.file_path
+    file_contents: str = file_path.read_text(encoding="utf8")
     try:
         module: ast.Module = ast.parse(file_contents)
     except SyntaxError as e:
@@ -72,14 +75,15 @@ def get_type_annotation_context(
                 logger.exception(f"Error while getting definition: {ex}")
             definition = []
         if definition:  # TODO can be multiple definitions
-            definition_path = str(definition[0].module_path)
+            definition_path = definition[0].module_path
             # The definition is part of this project and not defined within the original function
             if (
-                definition_path.startswith(project_root_path + os.sep)
+                str(definition_path).startswith(str(project_root_path) + os.sep)
                 and definition[0].full_name
                 and not path_belongs_to_site_packages(definition_path)
                 and not belongs_to_function(definition[0], function_name)
             ):
+                assert definition_path is not None
                 source_code = get_code(
                     [
                         FunctionToOptimize(
@@ -164,7 +168,7 @@ def get_type_annotation_context(
 
 def get_function_variables_definitions(
     function_to_optimize: FunctionToOptimize,
-    project_root_path: str,
+    project_root_path: Path,
 ) -> tuple[list[FunctionSource], set[tuple[str, str]]]:
     function_name = function_to_optimize.function_name
     file_path = function_to_optimize.file_path
@@ -203,10 +207,11 @@ def get_function_variables_definitions(
         if definitions:
             # TODO: there can be multiple definitions, see how to handle such cases
             definition = definitions[0]
-            definition_path = str(definition.module_path)
+            definition_path = definition.module_path
+            assert definition_path is not None
             # The definition is part of this project and not defined within the original function
             if (
-                definition_path.startswith(project_root_path + os.sep)
+                str(definition_path).startswith(str(project_root_path) + os.sep)
                 and not path_belongs_to_site_packages(definition_path)
                 and definition.full_name
                 and not belongs_to_function(definition, function_name)
@@ -255,7 +260,7 @@ def get_function_variables_definitions(
     for source in sources:
         if (fully_qualified_name := source.fully_qualified_name) not in existing_fully_qualified_names:
             if not source.qualified_name.count("."):
-                no_parent_sources[source.file_path][source.qualified_name].add(source)
+                no_parent_sources[str(source.file_path)][source.qualified_name].add(source)
             else:
                 parent_sources.add(source)
             existing_fully_qualified_names.add(fully_qualified_name)
@@ -263,7 +268,7 @@ def get_function_variables_definitions(
         source
         for source in parent_sources
         if source.file_path not in no_parent_sources
-        or source.qualified_name.rpartition(".")[0] not in no_parent_sources[source.file_path]
+        or source.qualified_name.rpartition(".")[0] not in no_parent_sources[str(source.file_path)]
     ]
     deduped_no_parent_sources = [
         source
@@ -279,7 +284,7 @@ MAX_PROMPT_TOKENS = 4096  # 128000  # gpt-4-128k
 
 def get_constrained_function_context_and_helper_functions(
     function_to_optimize: FunctionToOptimize,
-    project_root_path: str,
+    project_root_path: Path,
     code_to_optimize: str,
     max_tokens: int = MAX_PROMPT_TOKENS,
 ) -> tuple[str, list[FunctionSource], set[tuple[str, str]]]:

cli/codeflash/optimization/optimizer.py

@@ -2,11 +2,11 @@ from __future__ import annotations
 
 import concurrent.futures
 import os
-import pathlib
 import subprocess
 import time
 import uuid
 from collections import defaultdict
+from pathlib import Path
 from typing import TYPE_CHECKING
 
 import isort
@@ -623,7 +623,7 @@ class Optimizer:
     def replace_function_and_helpers_with_optimized_code(
         self,
         code_context: CodeOptimizationContext,
-        function_to_optimize_file_path: str,
+        function_to_optimize_file_path: Path,
         optimized_code: str,
         qualified_function_name: str,
     ) -> bool:
@@ -660,7 +660,7 @@ class Optimizer:
     def get_code_optimization_context(
         self,
         function_to_optimize: FunctionToOptimize,
-        project_root: str,
+        project_root: Path,
         original_source_code: str,
     ) -> Result[CodeOptimizationContext, str]:
         code_to_optimize, contextual_dunder_methods = extract_code(
@@ -687,7 +687,7 @@ class Optimizer:
             optimizable_methods = [
                 FunctionToOptimize(
                     df.qualified_name.split(".")[-1],
-                    df.file_path,
+                    Path(df.file_path),
                     [FunctionParent(df.qualified_name.split(".")[0], "ClassDef")],
                     None,
                     None,
@@ -730,18 +730,14 @@ class Optimizer:
     @staticmethod
     def cleanup_leftover_test_return_values() -> None:
         # remove leftovers from previous run
-        pathlib.Path(get_run_tmp_file("test_return_values_0.bin")).unlink(
-            missing_ok=True,
-        )
-        pathlib.Path(get_run_tmp_file("test_return_values_0.sqlite")).unlink(
-            missing_ok=True,
-        )
+        get_run_tmp_file(Path("test_return_values_0.bin")).unlink(missing_ok=True)
+        get_run_tmp_file(Path("test_return_values_0.sqlite")).unlink(missing_ok=True)
 
     def instrument_existing_tests(
         self,
         function_to_optimize: FunctionToOptimize,
         function_to_tests: dict[str, list[TestsInFile]],
-    ) -> set[str]:
+    ) -> set[Path]:
         relevant_test_files_count = 0
         unique_instrumented_test_files = set()
 
@@ -767,10 +763,8 @@ class Optimizer:
                 )
                 if not success:
                     continue
-                new_test_path = (
-                    f"{os.path.splitext(test_file)[0]}__perfinstrumented{os.path.splitext(test_file)[1]}"
-                )
-                with pathlib.Path(new_test_path).open("w", encoding="utf8") as f:
+                new_test_path = Path(test_file).with_suffix(f"__perfinstrumented{Path(test_file).suffix}")
+                with new_test_path.open("w", encoding="utf8") as f:
                     f.write(injected_test)
                 unique_instrumented_test_files.add(new_test_path)
                 if not self.test_files.get_by_original_file_path(test_file):
@@ -793,7 +787,7 @@ class Optimizer:
         code_to_optimize_with_helpers: str,
         function_to_optimize: FunctionToOptimize,
         helper_functions: list[FunctionSource],
-        module_path: str,
+        module_path: Path,
         function_trace_id: str,
         run_experiment: bool = False,
     ) -> Result[tuple[GeneratedTestsList, OptimizationSet], str]:
@@ -995,12 +989,12 @@ class Optimizer:
 
         first_test_types = []
         first_test_functions = []
-        pathlib.Path(
-            get_run_tmp_file(f"test_return_values_{optimization_candidate_index}.bin"),
-        ).unlink(missing_ok=True)
-        pathlib.Path(
-            get_run_tmp_file(f"test_return_values_{optimization_candidate_index}.sqlite"),
-        ).unlink(missing_ok=True)
+        Path(get_run_tmp_file(f"test_return_values_{optimization_candidate_index}.bin")).unlink(
+            missing_ok=True,
+        )
+        Path(get_run_tmp_file(f"test_return_values_{optimization_candidate_index}.sqlite")).unlink(
+            missing_ok=True,
+        )
 
         for test_file in instrumented_unittests_created_for_function:
             relevant_tests_in_file = [
@@ -1069,12 +1063,10 @@ class Optimizer:
             )
         if best_runtime_until_now is None or total_candidate_timing < best_runtime_until_now:
             best_test_results = candidate_results
-        pathlib.Path(get_run_tmp_file(f"test_return_values_{optimization_candidate_index}.bin")).unlink(
+        Path(get_run_tmp_file(f"test_return_values_{optimization_candidate_index}.bin")).unlink(
             missing_ok=True,
         )
-        pathlib.Path(
-            get_run_tmp_file(f"test_return_values_{optimization_candidate_index}.sqlite"),
-        ).unlink(
+        Path(get_run_tmp_file(f"test_return_values_{optimization_candidate_index}.sqlite")).unlink(
             missing_ok=True,
         )
         if not equal_results:
@@ -1142,7 +1134,7 @@ class Optimizer:
         source_code_being_tested: str,
         function_to_optimize: FunctionToOptimize,
         helper_function_names: list[str],
-        module_path: str,
+        module_path: Path,
         function_trace_id: str,
     ) -> GeneratedTestsList | None:
         futures = [

cli/codeflash/tracer.py

@@ -9,6 +9,8 @@
 #  Licensed under the Apache License, Version 2.0 (the "License").
 #  http://www.apache.org/licenses/LICENSE-2.0
 #
+from __future__ import annotations
+
 import importlib.machinery
 import io
 import json
@@ -23,20 +25,21 @@ import time
 from collections import defaultdict
 from copy import copy
 from io import StringIO
+from pathlib import Path
 from types import FrameType
-from typing import Any, List, Optional
+from typing import Any, ClassVar, List, Optional
 
 import dill
 import isort
 
 from codeflash.cli_cmds.cli import project_root_from_module_root
+from codeflash.cli_cmds.console import console
 from codeflash.code_utils.code_utils import module_name_from_file_path
 from codeflash.code_utils.config_parser import parse_config_file
 from codeflash.discovery.functions_to_optimize import filter_files_optimized
 from codeflash.tracing.replay_test import create_trace_replay_test
 from codeflash.tracing.tracing_utils import FunctionModules
 from codeflash.verification.verification_utils import get_test_file_path
-from codeflash.cli_cmds.console import console
 
 
 class Tracer:
@@ -49,7 +52,7 @@ class Tracer:
         output: str = "codeflash.trace",
         functions: Optional[List[str]] = None,
         disable: bool = False,
-        config_file_path: Optional[str] = None,
+        config_file_path: Path | None = None,
         max_function_count: int = 256,
         timeout: Optional[int] = None,  # seconds
     ) -> None:
@@ -77,13 +80,14 @@ class Tracer:
             self.disable = True
             return
         self.con = None
-        self.output_file = os.path.abspath(output)
+        self.output_file = Path(output).resolve()
         self.functions = functions
         self.function_modules: List[FunctionModules] = []
         self.function_count = defaultdict(int)
+        self.current_file_path = Path(__file__).resolve()
         self.ignored_qualified_functions = {
-            f"{os.path.realpath(__file__)}:Tracer:__exit__",
-            f"{os.path.realpath(__file__)}:Tracer:__enter__",
+            f"{self.current_file_path}:Tracer:__exit__",
+            f"{self.current_file_path}:Tracer:__enter__",
         }
         self.max_function_count = max_function_count
         self.config, found_config_path = parse_config_file(config_file_path)
@@ -99,13 +103,9 @@ class Tracer:
             "<lambda>",
             "<module>",
         }
-        self.file_being_called_from: str = str(
-            os.path.basename(
-                os.path.realpath(sys._getframe().f_back.f_code.co_filename),
-            ).replace(
-                ".",
-                "_",
-            ),
+
+        self.file_being_called_from: str = str(Path(sys._getframe().f_back.f_code.co_filename).name).replace(
+            ".", "_"
         )
 
         assert timeout is None or timeout > 0, "Timeout should be greater than 0"
@@ -175,7 +175,7 @@ class Tracer:
             cur.execute(
                 "INSERT INTO pstats VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)",
                 (
-                    os.path.realpath(func[0]),
+                    Path(func[0]).resolve(),
                     func[1],
                     func[2],
                     func[3],
@@ -245,7 +245,7 @@ class Tracer:
 
         if code.co_name in self.ignored_functions:
             return
-        if not os.path.exists(file_name):
+        if not Path(file_name).exists():
             return
         if self.functions:
             if code.co_name not in self.functions:
@@ -264,7 +264,7 @@ class Tracer:
         except:
             # someone can override the getattr method and raise an exception. I'm looking at you wrapt
             return
-        file_name = os.path.realpath(file_name)
+        file_name = Path(file_name).resolve()
         function_qualified_name = f"{file_name}:{(class_name + ':' if class_name else '')}{code.co_name}"
         if function_qualified_name in self.ignored_qualified_functions:
             return
@@ -311,7 +311,7 @@ class Tracer:
             # We do not pickle self for __init__ to avoid recursion errors, and instead instantiate its class
             # directly with the rest of the arguments in the replay tests. We copy the arguments to avoid memory
             # leaks, bad references or side-effects when unpickling.
-            arguments = {k: v for k, v in arguments.items()}
+            arguments = dict(arguments.items())
             if class_name and code.co_name == "__init__":
                 del arguments["self"]
             local_vars = pickle.dumps(
@@ -463,7 +463,7 @@ class Tracer:
 
         return 1
 
-    dispatch = {
+    dispatch: ClassVar[dict[str, callable]] = {
         "call": trace_dispatch_call,
         "exception": trace_dispatch_exception,
         "return": trace_dispatch_return,
@@ -648,7 +648,7 @@ def main():
     # The script that we're profiling may chdir, so capture the absolute path
     # to the output file at startup.
     if args.outfile is not None:
-        args.outfile = os.path.abspath(args.outfile)
+        args.outfile = Path(args.outfile).resolve()
 
     if len(unknown_args) > 0:
         if args.module:
@@ -661,7 +661,7 @@ def main():
             }
         else:
             progname = unknown_args[0]
-            sys.path.insert(0, os.path.dirname(progname))
+            sys.path.insert(0, str(Path(progname).parent))
             with io.open_code(progname) as fp:
                 code = compile(fp.read(), progname, "exec")
             spec = importlib.machinery.ModuleSpec(name="__main__", loader=None, origin=progname)

cli/tests/test_add_needed_imports_from_module.py

@@ -1,4 +1,6 @@
-from codeflash.code_utils.code_extractor import add_needed_imports_from_module
+from pathlib import Path
+
+from codeflash.code_utils.code_extractor import add_needed_imports_from_module
 
 
 def test_add_needed_imports_from_module0() -> None:
@@ -46,9 +48,9 @@ class Source:
     expected = """def heyjude() -> None:
     print("Hey Jude, don't make it bad")
 """
-    src_path = "/home/roger/repos/codeflash/cli/codeflash/optimization/function_context.py"
-    dst_path = "/home/roger/repos/codeflash/cli/codeflash/optimization/function_context.py"
-    project_root = "/home/roger/repos/codeflash"
+    src_path = Path("/home/roger/repos/codeflash/cli/codeflash/optimization/function_context.py")
+    dst_path = Path("/home/roger/repos/codeflash/cli/codeflash/optimization/function_context.py")
+    project_root = Path("/home/roger/repos/codeflash")
     new_module = add_needed_imports_from_module(
         src_module,
         dst_module,
@@ -120,9 +122,9 @@ def belongs_to_function(name: Name, function_name: str) -> bool:
     # The name is defined inside the function or is the function itself
     return f".{function_name}." in subname or f".{function_name}" == subname
 '''
-    src_path = "/home/roger/repos/codeflash/cli/codeflash/optimization/function_context.py"
-    dst_path = "/home/roger/repos/codeflash/cli/codeflash/optimization/function_context.py"
-    project_root = "/home/roger/repos/codeflash"
+    src_path = Path("/home/roger/repos/codeflash/cli/codeflash/optimization/function_context.py")
+    dst_path = Path("/home/roger/repos/codeflash/cli/codeflash/optimization/function_context.py")
+    project_root = Path("/home/roger/repos/codeflash")
     new_module = add_needed_imports_from_module(
         src_module,
         dst_module,

cli/tests/test_code_replacement.py

@@ -25,7 +25,7 @@ class JediDefinition:
 
 @dataclasses.dataclass
 class FakeFunctionSource:
-    file_path: str
+    file_path: Path
     qualified_name: str
     fully_qualified_name: str
     only_function_name: str
@@ -81,11 +81,11 @@ print("Hello world")
         source_code=original_code,
         function_names=[function_name],
         optimized_code=optim_code,
-        file_path_of_module_with_function_to_optimize=str(Path(__file__).resolve()),
-        module_abspath=str(Path(__file__).resolve()),
+        file_path_of_module_with_function_to_optimize=Path(__file__).resolve(),
+        module_abspath=Path(__file__).resolve(),
         preexisting_objects=preexisting_objects,
         contextual_functions=contextual_functions,
-        project_root_path=str(Path(__file__).resolve().parent.resolve()),
+        project_root_path=Path(__file__).resolve().parent.resolve(),
     )
     assert new_code == expected
 
@@ -145,11 +145,11 @@ print("Hello world")
         source_code=original_code,
         function_names=[function_name],
         optimized_code=optim_code,
-        file_path_of_module_with_function_to_optimize=str(Path(__file__).resolve()),
-        module_abspath=str(Path(__file__).resolve()),
+        file_path_of_module_with_function_to_optimize=Path(__file__).resolve(),
+        module_abspath=Path(__file__).resolve(),
         preexisting_objects=preexisting_objects,
         contextual_functions=contextual_functions,
-        project_root_path=str(Path(__file__).resolve().parent.resolve()),
+        project_root_path=Path(__file__).resolve().parent.resolve(),
     )
     assert new_code == expected
 
@@ -206,11 +206,11 @@ print("Salut monde")
         source_code=original_code,
         function_names=function_names,
         optimized_code=optim_code,
-        file_path_of_module_with_function_to_optimize=str(Path(__file__).resolve()),
-        module_abspath=str(Path(__file__).resolve()),
+        file_path_of_module_with_function_to_optimize=Path(__file__).resolve(),
+        module_abspath=Path(__file__).resolve(),
         preexisting_objects=preexisting_objects,
         contextual_functions=contextual_functions,
-        project_root_path=str(Path(__file__).resolve().parent.resolve()),
+        project_root_path=Path(__file__).resolve().parent.resolve(),
     )
     assert new_code == expected
 
@@ -270,11 +270,11 @@ print("Salut monde")
         source_code=original_code,
         function_names=function_names,
         optimized_code=optim_code,
-        file_path_of_module_with_function_to_optimize=str(Path(__file__).resolve()),
-        module_abspath=str(Path(__file__).resolve()),
+        file_path_of_module_with_function_to_optimize=Path(__file__).resolve(),
+        module_abspath=Path(__file__).resolve(),
         preexisting_objects=preexisting_objects,
         contextual_functions=contextual_functions,
-        project_root_path=str(Path(__file__).resolve().parent.resolve()),
+        project_root_path=Path(__file__).resolve().parent.resolve(),
     )
     assert new_code == expected
 
@@ -326,11 +326,11 @@ def supersort(doink):
         source_code=original_code,
         function_names=function_names,
         optimized_code=optim_code,
-        file_path_of_module_with_function_to_optimize=str(Path(__file__).resolve()),
-        module_abspath=str(Path(__file__).resolve()),
+        file_path_of_module_with_function_to_optimize=Path(__file__).resolve(),
+        module_abspath=Path(__file__).resolve(),
         preexisting_objects=preexisting_objects,
         contextual_functions=contextual_functions,
-        project_root_path=str(Path(__file__).resolve().parent.resolve()),
+        project_root_path=Path(__file__).resolve().parent.resolve(),
     )
     assert new_code == expected
 
@@ -402,11 +402,11 @@ print("Not cool")
         source_code=original_code_main,
         function_names=["other_function"],
         optimized_code=optim_code,
-        file_path_of_module_with_function_to_optimize=str(Path(__file__).resolve()),
-        module_abspath=str(Path(__file__).resolve()),
+        file_path_of_module_with_function_to_optimize=Path(__file__).resolve(),
+        module_abspath=Path(__file__).resolve(),
         preexisting_objects=[("other_function", []), ("yet_another_function", []), ("blob", [])],
         contextual_functions=set(),
-        project_root_path=str(Path(__file__).resolve().parent.resolve()),
+        project_root_path=Path(__file__).resolve().parent.resolve(),
     )
     assert new_main_code == expected_main
 
@@ -414,11 +414,11 @@ print("Not cool")
         source_code=original_code_helper,
         function_names=["blob"],
         optimized_code=optim_code,
-        file_path_of_module_with_function_to_optimize=str(Path(__file__).resolve()),
-        module_abspath=str(Path(__file__).resolve()),
+        file_path_of_module_with_function_to_optimize=Path(__file__).resolve(),
+        module_abspath=Path(__file__).resolve(),
         preexisting_objects=[],
         contextual_functions=set(),
-        project_root_path=str(Path(__file__).resolve().parent.resolve()),
+        project_root_path=Path(__file__).resolve().parent.resolve(),
     )
     assert new_helper_code == expected_helper
 
@@ -619,11 +619,11 @@ class CacheConfig(BaseConfig):
         source_code=original_code,
         function_names=function_names,
         optimized_code=optim_code,
-        file_path_of_module_with_function_to_optimize=str(Path(__file__).resolve()),
-        module_abspath=str(Path(__file__).resolve()),
+        file_path_of_module_with_function_to_optimize=Path(__file__).resolve(),
+        module_abspath=Path(__file__).resolve(),
         preexisting_objects=preexisting_objects,
         contextual_functions=contextual_functions,
-        project_root_path=str(Path(__file__).resolve().parent.resolve()),
+        project_root_path=Path(__file__).resolve().parent.resolve(),
     )
     assert new_code == expected
 
@@ -694,11 +694,11 @@ def test_test_libcst_code_replacement8() -> None:
         source_code=original_code,
         function_names=function_names,
         optimized_code=optim_code,
-        file_path_of_module_with_function_to_optimize=str(Path(__file__).resolve()),
-        module_abspath=str(Path(__file__).resolve()),
+        file_path_of_module_with_function_to_optimize=Path(__file__).resolve(),
+        module_abspath=Path(__file__).resolve(),
         preexisting_objects=preexisting_objects,
         contextual_functions=contextual_functions,
-        project_root_path=str(Path(__file__).resolve().parent.resolve()),
+        project_root_path=Path(__file__).resolve().parent.resolve(),
     )
     assert new_code == expected
 
@@ -757,11 +757,11 @@ print("Hello world")
         source_code=original_code,
         function_names=[function_name],
         optimized_code=optim_code,
-        file_path_of_module_with_function_to_optimize=str(Path(__file__).resolve()),
-        module_abspath=str(Path(__file__).resolve()),
+        file_path_of_module_with_function_to_optimize=Path(__file__).resolve(),
+        module_abspath=Path(__file__).resolve(),
         preexisting_objects=preexisting_objects,
         contextual_functions=contextual_functions,
-        project_root_path=str(Path(__file__).resolve().parent.resolve()),
+        project_root_path=Path(__file__).resolve().parent.resolve(),
     )
     assert new_code == expected
 
@@ -817,17 +817,16 @@ class MainClass:
     )
     func_top_optimize = FunctionToOptimize(
         function_name="main_method",
-        file_path=str(file_path),
+        file_path=file_path,
         parents=[FunctionParent("MainClass", "ClassDef")],
     )
-    with open(file_path) as f:
-        original_code = f.read()
-        code_context = opt.get_code_optimization_context(
-            function_to_optimize=func_top_optimize,
-            project_root=str(file_path.parent),
-            original_source_code=original_code,
-        ).unwrap()
-        assert code_context.code_to_optimize_with_helpers == get_code_output
+    original_code = file_path.read_text()
+    code_context = opt.get_code_optimization_context(
+        function_to_optimize=func_top_optimize,
+        project_root=file_path.parent,
+        original_source_code=original_code,
+    ).unwrap()
+    assert code_context.code_to_optimize_with_helpers == get_code_output
 
 
 def test_code_replacement11() -> None:
@@ -946,11 +945,11 @@ def test_test_libcst_code_replacement13() -> None:
         source_code=original_code,
         function_names=function_names,
         optimized_code=optim_code,
-        file_path_of_module_with_function_to_optimize=str(Path(__file__).resolve()),
-        module_abspath=str(Path(__file__).resolve()),
+        file_path_of_module_with_function_to_optimize=Path(__file__).resolve(),
+        module_abspath=Path(__file__).resolve(),
         preexisting_objects=preexisting_objects,
         contextual_functions=contextual_functions,
-        project_root_path=str(Path(__file__).resolve().parent.resolve()),
+        project_root_path=Path(__file__).resolve().parent.resolve(),
     )
     assert new_code == original_code
 
@@ -1143,7 +1142,9 @@ class TestResults(BaseModel):
 
     helper_functions = [
         FakeFunctionSource(
-            file_path="/Users/saurabh/Library/CloudStorage/Dropbox/codeflash/cli/codeflash/verification/test_results.py",
+            file_path=Path(
+                "/Users/saurabh/Library/CloudStorage/Dropbox/codeflash/cli/codeflash/verification/test_results.py"
+            ),
             qualified_name="TestType",
             fully_qualified_name="codeflash.verification.test_results.TestType",
             only_function_name="TestType",
@@ -1156,11 +1157,11 @@ class TestResults(BaseModel):
         source_code=original_code,
         function_names=["TestResults.get_test_pass_fail_report_by_type"],
         optimized_code=optim_code,
-        file_path_of_module_with_function_to_optimize=str(Path(__file__).resolve()),
-        module_abspath=str(Path(__file__).resolve()),
+        file_path_of_module_with_function_to_optimize=Path(__file__).resolve(),
+        module_abspath=Path(__file__).resolve(),
         preexisting_objects=preexisting_objects,
         contextual_functions=contextual_functions,
-        project_root_path=str(Path(__file__).parent.resolve()),
+        project_root_path=Path(__file__).parent.resolve(),
     )
 
     helper_functions_by_module_abspath = defaultdict(set)
@@ -1177,11 +1178,11 @@ class TestResults(BaseModel):
             source_code=new_code,
             function_names=list(qualified_names),
             optimized_code=optim_code,
-            file_path_of_module_with_function_to_optimize=str(Path(__file__).resolve()),
+            file_path_of_module_with_function_to_optimize=Path(__file__).resolve(),
             module_abspath=module_abspath,
             preexisting_objects=preexisting_objects,
             contextual_functions=contextual_functions,
-            project_root_path=str(Path(__file__).parent.resolve()),
+            project_root_path=Path(__file__).parent.resolve(),
         )
 
     assert (
@@ -1361,12 +1362,16 @@ def cosine_similarity_top_k(
     
     return ret_idxs, scores
 '''
-    preexisting_objects = [("cosine_similarity_top_k", []), ("Matrix", []), ("cosine_similarity", [])]
+    preexisting_objects: list[tuple[str, list[FunctionParent]]] = [
+        ("cosine_similarity_top_k", []),
+        ("Matrix", []),
+        ("cosine_similarity", []),
+    ]
 
-    contextual_functions = set()
+    contextual_functions: set[tuple[str, str]] = set()
     helper_functions = [
         FakeFunctionSource(
-            file_path=str((Path(__file__).parent / "code_to_optimize" / "math_utils.py").resolve()),
+            file_path=(Path(__file__).parent / "code_to_optimize" / "math_utils.py").resolve(),
             qualified_name="Matrix",
             fully_qualified_name="code_to_optimize.math_utils.Matrix",
             only_function_name="Matrix",
@@ -1374,7 +1379,7 @@ def cosine_similarity_top_k(
             jedi_definition=JediDefinition(type="class"),
         ),
         FakeFunctionSource(
-            file_path=str((Path(__file__).parent / "code_to_optimize" / "math_utils.py").resolve()),
+            file_path=(Path(__file__).parent / "code_to_optimize" / "math_utils.py").resolve(),
             qualified_name="cosine_similarity",
             fully_qualified_name="code_to_optimize.math_utils.cosine_similarity",
             only_function_name="cosine_similarity",
@@ -1387,11 +1392,11 @@ def cosine_similarity_top_k(
         source_code=original_code,
         function_names=["cosine_similarity_top_k"],
         optimized_code=optim_code,
-        file_path_of_module_with_function_to_optimize=str(Path(__file__).resolve()),
-        module_abspath=str((Path(__file__).parent / "code_to_optimize").resolve()),
+        file_path_of_module_with_function_to_optimize=Path(__file__).resolve(),
+        module_abspath=(Path(__file__).parent / "code_to_optimize").resolve(),
         preexisting_objects=preexisting_objects,
         contextual_functions=contextual_functions,
-        project_root_path=str(Path(__file__).parent.parent.resolve()),
+        project_root_path=Path(__file__).parent.parent.resolve(),
     )
     assert (
         new_code
@@ -1452,11 +1457,11 @@ def cosine_similarity_top_k(
             source_code=new_code,
             function_names=list(qualified_names),
             optimized_code=optim_code,
-            file_path_of_module_with_function_to_optimize=str(Path(__file__).resolve()),
+            file_path_of_module_with_function_to_optimize=Path(__file__).resolve(),
             module_abspath=module_abspath,
             preexisting_objects=preexisting_objects,
             contextual_functions=contextual_functions,
-            project_root_path=str(Path(__file__).parent.parent.resolve()),
+            project_root_path=Path(__file__).parent.parent.resolve(),
         )
 
     assert (

cli/tests/test_code_utils.py

@@ -0,0 +1,92 @@
+import ast
+from pathlib import Path
+
+import pytest
+
+from codeflash.code_utils.code_utils import get_imports_from_file, module_name_from_file_path
+
+
+# tests for module_name_from_file_path
+def test_module_name_from_file_path() -> None:
+    project_root_path = Path("/Users/codeflashuser/PycharmProjects/codeflash")
+    file_path = project_root_path / "cli/codeflash/code_utils/code_utils.py"
+
+    module_name = module_name_from_file_path(file_path, project_root_path)
+    assert module_name == "cli.codeflash.code_utils.code_utils"
+
+
+def test_module_name_from_file_path_with_subdirectory() -> None:
+    project_root_path = Path("/Users/codeflashuser/PycharmProjects/codeflash")
+    file_path = project_root_path / "cli/codeflash/code_utils/subdir/code_utils.py"
+
+    module_name = module_name_from_file_path(file_path, project_root_path)
+    assert module_name == "cli.codeflash.code_utils.subdir.code_utils"
+
+
+def test_module_name_from_file_path_with_different_root() -> None:
+    project_root_path = Path("/Users/codeflashuser/PycharmProjects")
+    file_path = project_root_path / "codeflash/cli/codeflash/code_utils/code_utils.py"
+
+    module_name = module_name_from_file_path(file_path, project_root_path)
+    assert module_name == "codeflash.cli.codeflash.code_utils.code_utils"
+
+
+def test_module_name_from_file_path_with_root_as_file() -> None:
+    project_root_path = Path("/Users/codeflashuser/PycharmProjects/codeflash/cli/codeflash/code_utils")
+    file_path = project_root_path / "code_utils.py"
+
+    module_name = module_name_from_file_path(file_path, project_root_path)
+    assert module_name == "code_utils"
+
+
+# def test_get_imports_from_file_with_file_path(tmp_path: Path):
+#     test_file = tmp_path / "test_file.py"
+#     test_file.write_text("import os\nfrom sys import path\n")
+
+#     imports = get_imports_from_file(file_path=test_file)
+#     assert len(imports) == 2
+#     assert isinstance(imports[0], ast.Import)
+#     assert isinstance(imports[1], ast.ImportFrom)
+#     assert imports[0].names[0].name == "os"
+#     assert imports[1].module == "sys"
+#     assert imports[1].names[0].name == "path"
+
+
+# def test_get_imports_from_file_with_file_string():
+#     file_string = "import os\nfrom sys import path\n"
+
+#     imports = get_imports_from_file(file_string=file_string)
+#     assert len(imports) == 2
+#     assert isinstance(imports[0], ast.Import)
+#     assert isinstance(imports[1], ast.ImportFrom)
+#     assert imports[0].names[0].name == "os"
+#     assert imports[1].module == "sys"
+#     assert imports[1].names[0].name == "path"
+
+
+# def test_get_imports_from_file_with_file_ast():
+#     file_string = "import os\nfrom sys import path\n"
+#     file_ast = ast.parse(file_string)
+
+#     imports = get_imports_from_file(file_ast=file_ast)
+#     assert len(imports) == 2
+#     assert isinstance(imports[0], ast.Import)
+#     assert isinstance(imports[1], ast.ImportFrom)
+#     assert imports[0].names[0].name == "os"
+#     assert imports[1].module == "sys"
+#     assert imports[1].names[0].name == "path"
+
+
+# def test_get_imports_from_file_with_syntax_error(caplog):
+#     file_string = "import os\nfrom sys import path\ninvalid syntax"
+
+#     imports = get_imports_from_file(file_string=file_string)
+#     assert len(imports) == 0
+#     assert "Syntax error in code" in caplog.text
+
+
+# def test_get_imports_from_file_with_no_input():
+#     with pytest.raises(
+#         AssertionError, match="Must provide exactly one of file_path, file_string, or file_ast"
+#     ):
+#         get_imports_from_file()

cli/tests/test_formatter.py

@@ -1,7 +1,9 @@
 import os
 import tempfile
+from pathlib import Path
 
 import pytest
+
 from codeflash.code_utils.config_parser import parse_config_file
 from codeflash.code_utils.formatter import format_code, sort_imports
 
@@ -34,12 +36,13 @@ def test_sort_imports_without_formatting():
     with tempfile.NamedTemporaryFile() as tmp:
         tmp.write(b"import sys\nimport unittest\nimport os\n")
         tmp.flush()
-        tmp_path = tmp.name
+        tmp_path = Path(tmp.name)
 
         new_code = format_code(
             formatter_cmds=["disabled"],
             path=tmp_path,
         )
+        assert new_code is not None
         new_code = sort_imports(new_code)
         assert new_code == "import os\nimport sys\nimport unittest\n"
 
@@ -108,7 +111,7 @@ ignore-paths = []
     with tempfile.NamedTemporaryFile(suffix=".toml", delete=False) as tmp:
         tmp.write(config_data.encode())
         tmp.flush()
-        tmp_path = tmp.name
+        tmp_path = Path(tmp.name)
 
     try:
         config, _ = parse_config_file(tmp_path)
@@ -135,7 +138,7 @@ def foo():
 
         actual = format_code(
             formatter_cmds=["black $file"],
-            path=tmp_path,
+            path=Path(tmp_path),
         )
         assert actual == expected
 
@@ -160,7 +163,7 @@ def foo():
 
         actual = format_code(
             formatter_cmds=["black $file"],
-            path=tmp_path,
+            path=Path(tmp_path),
         )
         assert actual == expected
 
@@ -189,6 +192,6 @@ def foo():
 
         actual = format_code(
             formatter_cmds=["ruff check --exit-zero --fix $file", "ruff format $file"],
-            path=tmp_path,
+            path=Path(tmp_path),
         )
         assert actual == expected