Fix mypy scripts

mypy.ini

@@ -2,4 +2,4 @@
 ignore_missing_imports = True
 
 ; FIXME: #4052 fix mypy errors in the exclude directories and remove them below
-exclude = (data_structures|dynamic_programming|graphs|maths|matrix|other|project_euler|scripts|searches|strings*)/$
+exclude = (data_structures|dynamic_programming|graphs|maths|matrix|other|project_euler|searches|strings*)/$

scripts/validate_filenames.py

@@ -4,7 +4,7 @@
 try:
     from .build_directory_md import good_file_paths
 except ImportError:
-    from build_directory_md import good_file_paths
+    from build_directory_md import good_file_paths  # type: ignore
 
 filepaths = list(good_file_paths())
 assert filepaths, "good_file_paths() failed!"

scripts/validate_solutions.py

@@ -22,7 +22,7 @@ def convert_path_to_module(file_path: pathlib.Path) -> ModuleType:
     """Converts a file path to a Python module"""
     spec = importlib.util.spec_from_file_location(file_path.name, str(file_path))
     module = importlib.util.module_from_spec(spec)
-    spec.loader.exec_module(module)
+    spec.loader.exec_module(module)  # type: ignore
     return module
 
 
@@ -89,5 +89,5 @@ def test_project_euler(solution_path: pathlib.Path) -> None:
     problem_number: str = solution_path.parent.name[8:].zfill(3)
     expected: str = PROBLEM_ANSWERS[problem_number]
     solution_module = convert_path_to_module(solution_path)
-    answer = str(solution_module.solution())
+    answer = str(solution_module.solution())  # type: ignore
     assert answer == expected, f"Expected {expected} but got {answer}"