Remove all ANSI escape sequences from a given string

ansi-escape-string

#!/usr/bin/env python3

import fileinput
import re

# 7-bit C1 ANSI sequences
ansi_escape = re.compile(r'''
    \x1B  # ESC
    (?:   # 7-bit C1 Fe (except CSI)
        [@-Z\\-_]
    |     # or [ for CSI, followed by a control sequence
        \[
        [0-?]*  # Parameter bytes
        [ -/]*  # Intermediate bytes
        [@-~]   # Final byte
    )
''', re.VERBOSE)

for line in fileinput.input():
    if 'Exit' == line.rstrip():
        break
    print(ansi_escape.sub('', line.rstrip()))