frame_replace.py

import re
import os

def replace_frame_str(str):
    r_ex = re.compile(r'\\FRAME.*?}}', flags=re.DOTALL)
    return re.sub(r_ex, '%FRAME', str)

def replace_frame_file(filename):
    with open(filename) as f:
        st = f.read()
        st_new = replace_frame_str(st)
    with open(filename, 'w') as f:
        f.write(st_new)

if __name__ == '__main__':
    for i in os.listdir('./'):
        if i.find('.tex') > 0:
            replace_frame_file(i)