Renames all .html templates to use .twig extension. Used in legacy Craft CMS builds.

dothtml-dottwig.py

import os
import shutil

def rename(dir):
    for subdir, dirs, files in os.walk(dir):
        for file in files:
            srcLocation = os.path.join(subdir, file)
            destLocation = srcLocation.replace('.html', '.twig')

            if not os.path.isfile(destLocation):
                print srcLocation + ' -> ' + destLocation
                shutil.move(srcLocation, destLocation)

def main():
    rename('./')

if __name__ == '__main__':
    main()