Pylint Recursively

Not sure why I am blogging this, but I've been having a bit of fun with pylint, which checks python code for "bad smells" (ie. code which doesn't match the PEP standards).
Pylint also finds unused imports, variables etc...

I have written a little script to get only errors and scores out of pylint.
It works recursively looking for *.py scripts within a directory passed to it on the command line, or (if that is missing) within the current working directory.

Posted here in case it is of any use to anyone.

#! /usr/bin/env python
'''
this module runs pylint on all python scripts found in a directory tree
'''

import os
import re
import sys

total = 0.0
count = 0

def check(module):
    '''
    apply pylint to the file specified if it is a *.py file
    '''
    global total, count

    if module[-3:] == ".py":

        print "CHECKING ", module
        pout = os.popen('pylint %s'% module, 'r')
        for line in pout:
            if  re.match("E....:.", line):
                print line
            if "Your code has been rated at" in line:
                print line
                score = re.findall("\d.\d\d", line)[0]
                total += float(score)
                count += 1
    
if __name__ == "__main__":
    try:
        print sys.argv   
        BASE_DIRECTORY = sys.argv[1]
    except IndexError:
        print "no directory specified, defaulting to current working directory"
        BASE_DIRECTORY = os.getcwd()

    print "looking for *.py scripts in subdirectories of ", BASE_DIRECTORY 
    for root, dirs, files in os.walk(BASE_DIRECTORY):
        for name in files:
            filepath = os.path.join(root, name)
            check(filepath)
            
    print "==" * 50
    print "%d modules found"% count
    print "AVERAGE SCORE = %.02f"% (total / count)