prints a number: last travis build for current branch

travis-last-build.py

#!/usr/bin/python
import sys
import re
import subprocess

popen = subprocess.Popen("travis history --branch `git rev-parse --abbrev-ref HEAD` --limit 1", stderr=subprocess.PIPE,
                         stdout=subprocess.PIPE, shell=True)

out, err = popen.communicate()
try:
    if popen.poll() != 0:
        sys.exit('%r died with code %r' % (popen.pid, popen.poll()))

    build = int(re.match('^#(\d+)', out).group(1))
except:
    sys.stderr.write(err)
    sys.stdout.write(out)
    raise
else:
    print build