replace recursive text exclude .git directory

replace.py

import os, fnmatch
def findReplace(directory, find, replace, filePattern):
    for path, dirs, files in os.walk(os.path.abspath(directory), topdown=True):
        dirs[:] = [d for d in dirs if d not in '.git']
        for filename in fnmatch.filter(files, filePattern):
            filepath = os.path.join(path, filename)
            with open(filepath) as f:
                s = f.read()
            s = s.replace(find, replace)
            with open(filepath, "w") as f:
                f.write(s)
#findReplace("www", "https://activities.learn-the-web.algonquindesign.ca", "http://activities.learn-the-web.tlmworks.org", "*")