Message306548
The -X dev mode currently *hides* some ResourceWarning warnings:
$ cat x.py
def func():
open('/etc/issue')
func()
func()
$ ./python x.py
x.py:2: ResourceWarning: unclosed file <_io.TextIOWrapper name='/etc/issue' mode='r' encoding='UTF-8'>
open('/etc/issue')
x.py:2: ResourceWarning: unclosed file <_io.TextIOWrapper name='/etc/issue' mode='r' encoding='UTF-8'>
open('/etc/issue')
haypo@selma$ ./python -X dev x.py
x.py:2: ResourceWarning: unclosed file <_io.TextIOWrapper name='/etc/issue' mode='r' encoding='UTF-8'>
open('/etc/issue')
The problem is that the "-W default" inserted by -X dev overrides the final filter on ResourceWarning:
$ ./python -X dev -c 'import warnings, pprint; pprint.pprint(warnings.filters)'
[('default',
re.compile('', re.IGNORECASE),
<class 'Warning'>,
re.compile(''),
0),
('ignore', None, <class 'BytesWarning'>, None, 0),
('always', None, <class 'ResourceWarning'>, None, 0)] |
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Date |
User |
Action |
Args |
2017-11-20 14:57:20 | vstinner | set | recipients:
+ vstinner, ncoghlan, serhiy.storchaka |
2017-11-20 14:57:20 | vstinner | set | messageid: <1511189840.42.0.213398074469.issue32089@psf.upfronthosting.co.za> |
2017-11-20 14:57:20 | vstinner | link | issue32089 messages |
2017-11-20 14:57:20 | vstinner | create | |
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