[New-bugs-announce] [issue18413] logging.error('asdf', extra={'msg':123}) raise KeyError exception

[Артем Меженин]

New submission from Артем Меженин:

Hello.
I noticed strange behavior of logging module, when debugging my code:

$ python
Python 2.7.3 (default, Aug  1 2012, 05:14:39) 
[GCC 4.6.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import logging
>>> logging.error('asdf')
ERROR:root:asdf
>>> logging.error('asdf', extra={'msg':123})
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python2.7/logging/__init__.py", line 1575, in error
    root.error(msg, *args, **kwargs)
  File "/usr/lib/python2.7/logging/__init__.py", line 1166, in error
    self._log(ERROR, msg, args, **kwargs)
  File "/usr/lib/python2.7/logging/__init__.py", line 1257, in _log
    record = self.makeRecord(self.name, level, fn, lno, msg, args, exc_info, func, extra)
  File "/usr/lib/python2.7/logging/__init__.py", line 1235, in makeRecord
    raise KeyError("Attempt to overwrite %r in LogRecord" % key)
KeyError: "Attempt to overwrite 'msg' in LogRecord"


Originally code was extra=locals() and 'msg' was local variable, but it doesn't matter.

----------
messages: 192744
nosy: amezhenin
priority: normal
severity: normal
status: open
title: logging.error('asdf', extra={'msg':123}) raise KeyError exception

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue18413>
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