Being more explicit with the import of importlib.util. (#181)

* Being more explicit with the import of importlib.util.

* Importing importlib.util in the one other place it is used.

src/fibad/config_utils.py

@@ -4,6 +4,7 @@
 import logging
 import random
 import re
+from importlib import util as importlib_util
 from pathlib import Path
 from typing import Optional, Union
 
@@ -155,7 +156,7 @@ def _find_external_library_default_config_paths(runtime_config: dict) -> set:
             else:
                 if key == "name" and "." in value:
                     external_library = value.split(".")[0]
-                    if importlib.util.find_spec(external_library) is not None:
+                    if importlib_util.find_spec(external_library) is not None:
                         try:
                             lib = importlib.import_module(external_library)
                             if lib.__file__ is None:

src/fibad/plugin_utils.py

@@ -1,4 +1,5 @@
 import importlib
+from importlib import util as importlib_util
 from typing import Any, Optional, TypeVar, Union
 
 T = TypeVar("T")
@@ -71,10 +72,10 @@ def import_module_from_string(module_path: str) -> Any:
     try:
         # Attempt to find the module spec, i.e. `module.submodule.`.
         # Will raise exception if `submodule`, 'subsubmodule', etc. is not found.
-        importlib.util.find_spec(module_name)
+        importlib_util.find_spec(module_name)
 
-        # `importlib.util.find_spec()` will return None if `module` is not found.
-        if (importlib.util.find_spec(module_name)) is not None:
+        # `importlib_util.find_spec()` will return None if `module` is not found.
+        if (importlib_util.find_spec(module_name)) is not None:
             # Load the requested module
             module = importlib.import_module(module_name)