Исправляем форматирование в исходниках

import os, re
for path, dirs, files in os.walk('.'):
    for file in files:
        if re.match('.+\.(php|css|js)|\.htaccess', file, re.IGNORECASE):
            f = open(path + '\\' + file, 'r+b')
            content = f.read()
            content = content.replace('\r', '')
            content = content.replace('\t', '    ')
            content = re.sub(' +$', '', content, flags=re.MULTILINE)
            content = re.sub('\n+$', '', content)
            f.truncate(0)
            f.seek(0)
            f.write(content)
            f.close()