Scrapes the commands from a Mathomatic session

mathoscraper.py

# Scrape a Mathomatic session for the commands. Does not catch special
# prompts, such as "Enter <identifier>: " after a calc command.

# Mathomatic: lightweight command-line Computer Algebra System
# http://mathomatic.orgserve.de/math/

from __future__ import print_function

import sys
import re

r = re.compile(r'^\d+-> (.*)$')

for ln in sys.stdin:
    m = r.match(ln)
    if m:
        print(m.group(1))