mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-09-18 14:40:43 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 11

bpo-32047: -X dev enables asyncio debug mode (#4418)

Browse source 
The new -X dev command line option now also enables asyncio debug
mode.
This commit is contained in:
Victor Stinner 2017-11-20 07:14:07 -08:00 • committed by GitHub
parent 04dee27208
commit 44862df2ee
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
6 changed files with 42 additions and 18 deletions
Download patch file Download diff file Expand all files Collapse all files

30
Lib/asyncio/coroutines.py
View file

@ -19,17 +19,25 @@ from .log import logger
# Opcode of "yield from" instruction
_YIELD_FROM = opcode.opmap['YIELD_FROM']
# If you set _DEBUG to true, @coroutine will wrap the resulting
# generator objects in a CoroWrapper instance (defined below). That
# instance will log a message when the generator is never iterated
# over, which may happen when you forget to use "yield from" with a
# coroutine call. Note that the value of the _DEBUG flag is taken
# when the decorator is used, so to be of any use it must be set
# before you define your coroutines. A downside of using this feature
# is that tracebacks show entries for the CoroWrapper.__next__ method
# when _DEBUG is true.
_DEBUG = (not sys.flags.ignore_environment and
bool(os.environ.get('PYTHONASYNCIODEBUG')))
def _is_debug_mode():
# If you set _DEBUG to true, @coroutine will wrap the resulting
# generator objects in a CoroWrapper instance (defined below). That
# instance will log a message when the generator is never iterated
# over, which may happen when you forget to use "yield from" with a
# coroutine call. Note that the value of the _DEBUG flag is taken
# when the decorator is used, so to be of any use it must be set
# before you define your coroutines. A downside of using this feature
# is that tracebacks show entries for the CoroWrapper.__next__ method
# when _DEBUG is true.
debug = (not sys.flags.ignore_environment and
bool(os.environ.get('PYTHONASYNCIODEBUG')))
if hasattr(sys, '_xoptions') and 'dev' in sys._xoptions:
debug = True
return debug
_DEBUG = _is_debug_mode()
try: