Generate Version number with Python

version_parser.py

#
# Taken from:
# https://github.com/fusionbox/django-authtools
#

import subprocess

version = (0, 2, 0, 'alpha')


def get_version():
    number = '.'.join(map(str, version[:3]))
    stage = version[3]
    if stage == 'final':
        return number
    # If it's an alpha release, append the first 8 characters of the git sha-1
    elif stage == 'alpha':
        process = subprocess.Popen('git rev-parse HEAD'.split(), stdout=subprocess.PIPE)
        stdout, stderr = process.communicate()
        return number + '-' + stdout.decode('utf-8').strip()[:8]