Remove Escape Chars from text file in Python

thisfile.py

#Usage: python thisfile.py "path/to/file.txt" > cleanfile.txt
import re
import sys
 
with open(sys.argv[1]) as fp:
    for line in fp:
        newline = re.sub(r'\x1B\[([0-9]{1,2}(;[0-9]{1,2})?)?[m|K]', "", line)
        print newline