Python os.path.walk() method

Posted by Aaron Moodie on Stack Overflow See other posts from Stack Overflow or by Aaron Moodie
Published on 2010-05-29T07:56:24Z Indexed on 2010/05/29 8:02 UTC
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python

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beginner

I'm currently using the walk method in a uni assignment. It's all working fine, but I was hoping that someone could explain something to me.

in the example below, what is the a parameter used for on the myvisit method?

>>> from os.path import walk
>>> def myvisit(a, dir, files):
...   print dir,": %d files"%len(files)

>>> walk('/etc', myvisit, None)
/etc : 193 files
/etc/default : 12 files
/etc/cron.d : 6 files
/etc/rc.d : 6 files
/etc/rc.d/rc0.d : 18 files
/etc/rc.d/rc1.d : 27 files
/etc/rc.d/rc2.d : 42 files
/etc/rc.d/rc3.d : 17 files
/etc/rc.d/rcS.d : 13 files

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