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bpo-32154: Remove asyncio.selectors (#4605)

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* Remove asyncio.selectors and asyncio._overlapped symbols from the
  namespace of the asyncio module
* Replace "from asyncio import selectors" with "import selectors"
* Replace "from asyncio import _overlapped" with "import _overlapped"

asyncio.selectors was added to support Python 3.3, which doesn't have
selectors in its standard library, and Python 3.4 in the same code
base. Same rationale for asyncio._overlapped. Python 3.3 reached its
end of life, and asyncio is no more maintained as a third party
module on PyPI.
This commit is contained in:
Victor Stinner 2017-11-28 15:19:56 +01:00 • committed by GitHub
parent 3f438a9fa0
commit 4271dfd781
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10 changed files with 13 additions and 23 deletions
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15
Lib/asyncio/__init__.py
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@ -2,21 +2,6 @@
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.
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 *
from .coroutines import *