[issue19951] Fix docstring and use of _get_suppported_file_loaders() to reflect 2-tuples.

Lib/importlib/_bootstrap.py

@@ -881,7 +881,7 @@ class WindowsRegistryFinder:
             _os.stat(filepath)
         except OSError:
             return None
-        for loader, suffixes, _ in _get_supported_file_loaders():
+        for loader, suffixes in _get_supported_file_loaders():
             if filepath.endswith(tuple(suffixes)):
                 return loader(fullname, filepath)
 
@@ -1670,7 +1670,7 @@ def _calc___package__(globals):
 def _get_supported_file_loaders():
     """Returns a list of file-based module loaders.
 
-    Each item is a tuple (loader, suffixes, allow_packages).
+    Each item is a tuple (loader, suffixes).
     """
     extensions = ExtensionFileLoader, _imp.extension_suffixes()
     source = SourceFileLoader, SOURCE_SUFFIXES

Misc/NEWS

@@ -358,6 +358,9 @@ Library
 - Issue #18598: Tweak exception message for importlib.import_module() to
   include the module name when a key argument is missing.
 
+- Issue #19951: Fix docstring and use of _get_suppported_file_loaders() to
+  reflect 2-tuples.
+
 - Issue #18676: Change 'positive' to 'non-negative' in queue.py put and get
   docstrings and ValueError messages. Patch by Zhongyue Luo