Issue #15471: Don't use mutable object as default values for the
parameters of importlib.__import__().
diff --git a/Doc/library/importlib.rst b/Doc/library/importlib.rst
index df05ec4..2056b36 100644
--- a/Doc/library/importlib.rst
+++ b/Doc/library/importlib.rst
@@ -63,7 +63,7 @@
Functions
---------
-.. function:: __import__(name, globals={}, locals={}, fromlist=list(), level=0)
+.. function:: __import__(name, globals=None, locals=None, fromlist=(), level=0)
An implementation of the built-in :func:`__import__` function.