refactor code

Signed-off-by: Tushar Goel <tushar.goel.dav@gmail.com>

Author: TG1999

src/python_inspector/api.py

@@ -149,14 +149,14 @@ def resolve_dependencies(
         unvisited_files = known_files - visited_files
         for req_file in unvisited_files:
             deps = dependencies.get_dependencies_from_requirements(requirements_file=req_file)
-            os.path.dirname(req_file)
             for extra_data in dependencies.get_extra_data_from_requirements(
                 requirements_file=req_file
             ):
                 index_urls = (*index_urls, *tuple(extra_data.get("extra_index_urls") or []))
                 recursive_files = extra_data.get("requirements") or []
             direct_dependencies.extend(deps)
-            recursive_files = [os.path.join(os.path.dirname(req_file), f) for f in recursive_files]
+            dirname = os.path.dirname(req_file)
+            recursive_files = [os.path.join(dirname, f) for f in recursive_files]
             package_data = [
                 pkg_data.to_dict()
                 for pkg_data in PipRequirementsFileHandler.parse(location=req_file)