[issue4749] Issue with RotatingFileHandler logging handler on Windows

[Robert Cronk]

Robert Cronk <cronk.r at gmail.com> added the comment:

I changed the script to use subprocess (attached file) and got the same 
rollover errors as before.  I had to change cd and del to be cd.bat and 
del.bat which contained cd %1 and del %1 respectively since it appears 
subprocess can't run internal commands like cd and del (unless you 
specify shell = True, which I thought might defeat the purpose of the 
test).

I will search around for this bug to see if it's already been entered.  
If the python developers decide not to fix this by wrapping os.system 
(and I guess subprocess.Popen too) with locks to prevent this error, 
then I agree that it should at least be well documented.

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Added file: http://bugs.python.org/file14260/subprclg.py

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