Refs -- Optimized cached_import() helper.
@@ -6,14 +6,14 @@ from importlib.util import find_spec as importlib_find
def cached_import(module_path, class_name):
- modules = sys.modules
- if module_path not in modules or (
- # Module is not fully initialized.
- getattr(modules[module_path], '__spec__', None) is not None and
- getattr(modules[module_path].__spec__, '_initializing', False) is True
+ # Check whether module is loaded and fully initialized.
+ if not (
+ (module := sys.modules.get(module_path)) and
+ (spec := getattr(module, '__spec__', None)) and
+ getattr(spec, '_initializing', False) is False
):
- import_module(module_path)
- return getattr(modules[module_path], class_name)
+ module = import_module(module_path)
+ return getattr(module, class_name)
def import_string(dotted_path):
