go-version.py

# Inside the root of the Go repository...

from commands import getoutput

version = "%s %s\n" % (
    getoutput(
        'git describe --tags --abbrev=0 --match '
        '"[wr]e[el][ke][la][ys][e.][2.][02r][0-9]*"'
        ),
    getoutput("git describe --always --abbrev=8 --dirty=+")
    )

version_file = open('VERSION', 'w')
version_file.write(version)
version_file.close()