New submission from Simon Naish:
When attempting to use a config file with logging to set up a series of loggers
in a script, when running on windows, if the config file name starts with an
'r' then the script fails with the following error:-
File "C:\Users\simon\Documents\python dev\RepositoryChainPkg\FileLogger.py",
line 45, in fileConfig
logging.config.fileConfig(FileLogger.CONF_FILENAME)
File "C:\Python27\lib\logging\config.py", line 78, in fileConfig
handlers = _install_handlers(cp, formatters)
File "C:\Python27\lib\logging\config.py", line 156, in _install_handlers
h = klass(*args)
File "C:\Python27\lib\logging\handlers.py", line 117, in __init__
BaseRotatingHandler.__init__(self, filename, mode, encoding, delay)
File "C:\Python27\lib\logging\handlers.py", line 64, in __init__
logging.FileHandler.__init__(self, filename, mode, encoding, delay)
File "C:\Python27\lib\logging\__init__.py", line 902, in __init__
StreamHandler.__init__(self, self._open())
File "C:\Python27\lib\logging\__init__.py", line 925, in _open
stream = open(self.baseFilename, self.mode)
IOError: [Errno 22] invalid mode ('a') or filename:
'C:\\Users\\simon\repositoryChainLogging\repo_log.log'
The same script works perfectly on linux and solaris.
Points to note, the config filename (and path) is listed in the error as:-
'C:\\Users\\simon\repositoryChainLogging\repo_log.log'
Yet when it is passed to logging\config.py as parameter fname in function
fileConfig it is:-
b'C:\\Users\\simon\\repositoryChainLogging\\repo_log.conf'
In other words the path passed in by the script is correctly seperated and
escaped by os.path functions.
However in _install_handlers (line 133 of logging\config.py) the args =
eval(args, vars(logging))line (154) gets the path back in this tuple:-
(b'C:\\Users\\snaish.BRIGHTON\repositoryChainLogging\repo_log.log', b'a',
131072,
10)
Where it has clearly lost some of the escaping, rendering the path useless,
since \r is a control character, and therefore invalidates the path.
Therefore at the moment it is impossible to use logging config fiels beginning
with r onw windows at the moment.
----------
components: Library (Lib)
messages: 202422
nosy: 51m0n
priority: normal
severity: normal
status: open
title: logger.config.fileConfig cant cope with files starting with an 'r' on
windows
versions: Python 2.7
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Python tracker <[email protected]>
<http://bugs.python.org/issue19528>
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