Issue #15471: Don't use mutable object as default values for the
parameters of importlib.__import__().
diff --git a/Doc/library/functions.rst b/Doc/library/functions.rst
index e7ee51b..212b4e1 100644
--- a/Doc/library/functions.rst
+++ b/Doc/library/functions.rst
@@ -1443,7 +1443,7 @@
       True
 
 
-.. function:: __import__(name, globals={}, locals={}, fromlist=[], level=0)
+.. function:: __import__(name, globals=None, locals=None, fromlist=(), level=0)
 
    .. index::
       statement: import