Refactor script bases

refactor.py

"""
This program takes a list of file names as arguments and applies a single Python function to them, in place.
An easy way to apply this to all files in a directory is:
  find someDir -name '*.ts' | xargs python refactor.py

I recommend that you run this script in a clean git repository so that you can easily undo its changes using
the `git reset --hard` command.
"""

from sys import argv

def main():
  for filename in argv[1:]:
    with open(filename, 'r') as fp:
      contents = fp.read()
    
    new_contents = do_refactor(contents)
    
    if new_contents != contents:
      with open(filename, 'w') as fp:
        fp.write(new_contents)


def do_refactor(file_contents):
  # Do your stuff here
  pass


if __name__ == '__main__':
    main()