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-rw-r--r--Lib/asyncio/locks.py7
1 files changed, 7 insertions, 0 deletions
diff --git a/Lib/asyncio/locks.py b/Lib/asyncio/locks.py
index aa6ed3e..57eb69e 100644
--- a/Lib/asyncio/locks.py
+++ b/Lib/asyncio/locks.py
@@ -3,6 +3,7 @@
__all__ = ['Lock', 'Event', 'Condition', 'Semaphore', 'BoundedSemaphore']
import collections
+import warnings
from . import events
from . import futures
@@ -63,6 +64,9 @@ class _ContextManagerMixin:
# <block>
# finally:
# lock.release()
+ warnings.warn("'with (yield from lock)' is deprecated "
+ "use 'async with lock' instead",
+ DeprecationWarning, stacklevel=2)
yield from self.acquire()
return _ContextManager(self)
@@ -71,6 +75,9 @@ class _ContextManagerMixin:
return _ContextManager(self)
def __await__(self):
+ warnings.warn("'with await lock' is deprecated "
+ "use 'async with lock' instead",
+ DeprecationWarning, stacklevel=2)
# To make "with await lock" work.
return self.__acquire_ctx().__await__()