python · shihai1991 · Apr 19, 2020
diff --git a/Lib/test/libregrtest/save_env.py b/Lib/test/libregrtest/save_env.py
@@ -10,6 +10,7 @@
 import urllib.request
 import warnings
 from test import support
+from test.support.asyncioutils import maybe_get_event_loop_policy
 from test.libregrtest.utils import print_warning
 try:
     import _multiprocessing, multiprocessing.process
@@ -84,7 +85,7 @@ def restore_urllib_requests__opener(self, opener):
         urllib.request._opener = opener
 
     def get_asyncio_events__event_loop_policy(self):
-        return support.maybe_get_event_loop_policy()
+        return maybe_get_event_loop_policy()
     def restore_asyncio_events__event_loop_policy(self, policy):
         asyncio.set_event_loop_policy(policy)
 

diff --git a/Lib/test/support/__init__.py b/Lib/test/support/__init__.py
@@ -3,7 +3,6 @@
 if __name__ != 'test.support':
     raise ImportError('support must be imported from the test package')
 
-import asyncio.events
 import collections.abc
 import contextlib
 import errno
@@ -3255,10 +3254,6 @@ def __gt__(self, other):
 
 SMALLEST = _SMALLEST()
 
-def maybe_get_event_loop_policy():
-    """Return the global event loop policy if one is set, else return None."""
-    return asyncio.events._event_loop_policy
-
 # Helpers for testing hashing.
 NHASHBITS = sys.hash_info.width # number of bits in hash() result
 assert NHASHBITS in (32, 64)

diff --git a/Lib/test/support/asyncioutils.py b/Lib/test/support/asyncioutils.py
@@ -0,0 +1,7 @@
+"""Utilities to support asyncio in the Python regression tests."""
+
+import asyncio.events
+
+def maybe_get_event_loop_policy():
+    """Return the global event loop policy if one is set, else return None."""
+    return asyncio.events._event_loop_policy
diff --git a/Lib/test/test_asyncio/utils.py b/Lib/test/test_asyncio/utils.py
@@ -34,6 +34,7 @@
 from asyncio import tasks
 from asyncio.log import logger
 from test import support
+from test.support.asyncioutils import maybe_get_event_loop_policy
 
 
 def data_file(filename):
@@ -515,7 +516,7 @@ def close_loop(loop):
             else:
                 loop._default_executor.shutdown(wait=True)
         loop.close()
-        policy = support.maybe_get_event_loop_policy()
+        policy = maybe_get_event_loop_policy()
         if policy is not None:
             try:
                 watcher = policy.get_child_watcher()

diff --git a/Lib/test/test_builtin.py b/Lib/test/test_builtin.py
@@ -27,8 +27,8 @@
 from operator import neg
 from test import support
 from test.support import (
-    EnvironmentVarGuard, TESTFN, check_warnings, swap_attr, unlink,
-    maybe_get_event_loop_policy)
+    EnvironmentVarGuard, TESTFN, check_warnings, swap_attr, unlink)
+from test.support.asyncioutils import maybe_get_event_loop_policy
 from test.support.script_helper import assert_python_ok
 from unittest.mock import MagicMock, patch
 try: