Fix import asyncio (#763)

third_party/python/Lib/asyncio/__init__.py

@@ -5,17 +5,8 @@ import sys
 # The selectors module is in the stdlib in Python 3.4 but not in 3.3.
 # Do this first, so the other submodules can use "from . import selectors".
 # Prefer asyncio/selectors.py over the stdlib one, as ours may be newer.
-try:
-    from . import selectors
-except ImportError:
-    import selectors  # Will also be exported.
+import selectors  # Will also be exported.
 
-if sys.platform == 'win32':
-    # Similar thing for _overlapped.
-    try:
-        from . import _overlapped
-    except ImportError:
-        import _overlapped  # Will also be exported.
 
 # This relies on each of the submodules having an __all__ variable.
 from .base_events import *
@@ -42,9 +33,5 @@ __all__ = (base_events.__all__ +
            tasks.__all__ +
            transports.__all__)
 
-if sys.platform == 'win32':  # pragma: no cover
-    from .windows_events import *
-    __all__ += windows_events.__all__
-else:
-    from .unix_events import *  # pragma: no cover
-    __all__ += unix_events.__all__
+from .unix_events import *  # pragma: no cover
+__all__ += unix_events.__all__

third_party/python/Lib/asyncio/events.py

@@ -659,7 +659,7 @@ def _init_event_loop_policy():
     global _event_loop_policy
     with _lock:
         if _event_loop_policy is None:  # pragma: no branch
-            from . import DefaultEventLoopPolicy
+            from .unix_events import DefaultEventLoopPolicy
             _event_loop_policy = DefaultEventLoopPolicy()
 
 

third_party/python/Lib/asyncio/selector_events.py

@@ -22,7 +22,7 @@ from . import compat
 from . import constants
 from . import events
 from . import futures
-from . import selectors
+import selectors
 from . import transports
 from . import sslproto
 from .coroutines import coroutine

third_party/python/Lib/asyncio/unix_events.py

@@ -19,7 +19,7 @@ from . import coroutines
 from . import events
 from . import futures
 from . import selector_events
-from . import selectors
+import selectors
 from . import transports
 from .coroutines import coroutine
 from .log import logger