Windows OS , Bizarre File Pointer Fact

Matt Nordhoff mnordhoff at mattnordhoff.com
Fri Jun 27 18:50:34 CEST 2008


Taygun Kekec wrote:
> Code :
> #!/usr/bin/python
> # -*- coding: utf-8 -*-
> import os
> 
> if os.name == 'nt':
>     OS_Selection = 0
> elif os.name == 'posix':
>     OS_Selection = 1
> else :
>     OS_Selection = 1
> 
> del_cmd_os = ( "del","rm")
> filelist = ("ddd.txt","eee.txt","fff.txt")
> 
> # Creating Files
> for elem in filelist:
>     open( elem, 'w').write("Selam")
> 
> #
> # Removing Files
> for elem in filelist:
>     fp = open( elem, 'r')
>     os.system( "%s %s" % (del_cmd_os[OS_Selection], fp.name))
>     fp.close()
> #
> 
> Run this code on Windows XP , it says "the file is being used by
> another process" and fails to delete the file. I tried replacing :
> #
> for elem in filelist:
>     open( elem, 'w').write("Selam")
> #
> with :
> #
> for elem in filelist:
>     fp = open( elem, 'w')
>     fp.write("Selam")
>     fp.close()
> #
> 
> in case of any interpreter file pointer destructor failure but it
> didnt change anything.
> Do you have any idea why my files cannot be deleted from my disk with
> 2nd part of my code ?

Why are you executing another program just to delete a file?

>>> import os
>>> os.remove('some/file.txt')
-- 



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