Friday, October 02, 2009

 

Stupid python tricks - list of paths from a file

Take a long, repetitive list of Windows filenames, like C:\TEMP\blah.txt, and return the unique pathnames from this list:
#!/usr/bin/python

import re

results={}

f = open('filelist.txt','r')
for line in f:
    m=re.search(r"(.:\\\S+)",line)
    if m != None:
        path=m.group(0).rpartition('\\')
        results[path[0]]=True

pathlist=results.keys()
pathlist.sort()
for path in pathlist:
    print path

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