Fixes Pyright type errors for src/flask/helpers.py

CHANGES.rst

@@ -6,6 +6,7 @@ Version 3.1.0
 -   ``Flask.open_resource``/``open_instance_resource`` and
     ``Blueprint.open_resource`` take an ``encoding`` parameter to use when
     opening in text mode. It defaults to ``utf-8``. :issue:`5504`
+-   Fixes Pyright type errors in ``src/flask/helpers.py``. :issue:`5547`
 
 Version 3.0.3
 -------------

src/flask/helpers.py

@@ -1,5 +1,6 @@
 from __future__ import annotations
 
+import importlib.abc
 import importlib.util
 import os
 import sys
@@ -586,7 +587,7 @@ def get_root_path(import_name: str) -> str:
     if loader is None:
         return os.getcwd()
 
-    if hasattr(loader, "get_filename"):
+    if isinstance(loader, (importlib.abc.FileLoader, importlib.abc.ExecutionLoader)):
         filepath = loader.get_filename(import_name)
     else:
         # Fall back to imports.