[docs] logging.Logger.debug example doesn't work

[Georg Brandl]

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Hi Robert,

this has already been fixed as part of http://bugs.python.org/issue11330 and
the example should work now with 3.2.1.

Georg

Am 12.07.2011 19:45, schrieb Robert Xiao:
> The Logger.debug example (at 
> http://docs.python.org/py3k/library/logging.html#logging.Logger.debug) does
> not actually work in Python 3.2:
> 
> Python 3.2 (r32:88452, Feb 20 2011, 11:12:31) [GCC 4.2.1 (Apple Inc. build
> 5664)] on darwin Type "help", "copyright", "credits" or "license" for more
> information.
>>>> import logging FORMAT = '%(asctime)-15s %(clientip)s %(user)-8s
>>>> %(message)s' logging.basicConfig(format=FORMAT) d = {'clientip':
>>>> '192.168.0.1', 'user': 'fbloggs'} logging.warning('Protocol problem:
>>>> %s', 'connection reset', extra=d)
> Traceback (most recent call last): File 
> "/Library/Frameworks/Python.framework/Versions/3.2/lib/python3.2/logging/__init__.py",
>
> 
line 934, in emit
> msg = self.format(record) File 
> "/Library/Frameworks/Python.framework/Versions/3.2/lib/python3.2/logging/__init__.py",
>
> 
line 809, in format
> return fmt.format(record) File 
> "/Library/Frameworks/Python.framework/Versions/3.2/lib/python3.2/logging/__init__.py",
>
> 
line 551, in format
> s = self.formatMessage(record) File 
> "/Library/Frameworks/Python.framework/Versions/3.2/lib/python3.2/logging/__init__.py",
>
> 
line 520, in formatMessage
> return self._style.format(record) File 
> "/Library/Frameworks/Python.framework/Versions/3.2/lib/python3.2/logging/__init__.py",
>
> 
line 371, in format
> return self._fmt % record.__dict__ KeyError: 'asctime' Logged from file
> <stdin>, line 1
> 
> The problem is that the logger expects to see the exact string "%(asctime)s"
> in the format string before it will add the asctime attribute. Using the
> "-15" modifier on the asctime causes the match to fail, and the asctime
> attribute is not emitted. To fix the example, change %(asctime)-15s to
> %(asctime)s:
> 
> Python 3.2 (r32:88452, Feb 20 2011, 11:12:31) [GCC 4.2.1 (Apple Inc. build
> 5664)] on darwin Type "help", "copyright", "credits" or "license" for more
> information.
>>>> import logging FORMAT = '%(asctime)s %(clientip)s %(user)-8s
>>>> %(message)s' logging.basicConfig(format=FORMAT) d = { 'clientip' :
>>>> '192.168.0.1', 'user' : 'fbloggs' } logger =
>>>> logging.getLogger('tcpserver') logger.warning('Protocol problem: %s',
>>>> 'connection reset', extra=d)
> 2011-07-12 13:39:44,317 192.168.0.1 fbloggs  Protocol problem: connection
> reset
> 
> This also reflects a problem in the library in that it is not flexible enough
> to understand different formats. As a separate matter, perhaps the library
> could be amended to always include the asctime field (the asctime string
> could be lazily computed by using a class instance for which the __str__
> method produces the actual formatted date), rather than trying to guess when
> it is needed.
> 
> Robert
> 
> 
> _______________________________________________ docs mailing list 
> docs at python.org http://mail.python.org/mailman/listinfo/docs

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