get line numbers

gistfile1.py

import os,sys


dirname = sys.argv[1]
totalCount = 0;
cDir = os.getcwd()
#allowd file extsions, .js, .css ...
extDir = ['.js', '.less', '.tpl', '.html']
#dir avoided to be checked
avoidDir = ['index/tpl', 'index/js']

for root, dirs, files in os.walk(dirname):
    suitDir = [ar for ar in avoidDir if root.find(ar) != -1]
    if len(suitDir) > 0 :
        continue
    for f in files:
        filename, fileExt = os.path.splitext(f)
        if fileExt in extDir:
            os.chdir(root)
            ff = open(f, 'r')
            lines = len(ff.readlines())
            totalCount += lines
            os.chdir(cDir)
            print 'filename: ' + f + ' lines:' + str(lines) + ' total:' + str(totalCount) + '\n'