New submission from Jakub Mateusz Kowalski:
The error occurs when there was a warning before the call to filterwarnings():
$ python
Python 2.7.6 (default, Mar 22 2014, 22:59:56)
[GCC 4.8.2] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import warnings
>>> warnings.warn('aa', DeprecationWarning)
>>> warnings.filterwarnings('always')
>>> warnings.warn('aa', DeprecationWarning)
>>>
When filterwarnings() is called before warnings, everything is working as
expected:
$ python
Python 2.7.6 (default, Mar 22 2014, 22:59:56)
[GCC 4.8.2] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import warnings
>>> warnings.filterwarnings('always')
>>> warnings.warn('aa', DeprecationWarning)
__main__:1: DeprecationWarning: aa
>>> warnings.warn('aa', DeprecationWarning)
__main__:1: DeprecationWarning: aa
>>>
----------
components: Interpreter Core
messages: 245691
nosy: Jakub.Mateusz.Kowalski
priority: normal
severity: normal
status: open
title: DeprecationWarning hidden even after warnings.filterwarnings('always')
called
type: behavior
versions: Python 2.7
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Python tracker <[email protected]>
<http://bugs.python.org/issue24490>
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