version.py

import os
import subprocess
from sys import stdout

try:
    with open(os.devnull, "w") as devnull:
        v = (
            subprocess.check_output(["git", "describe", "--tags", "--dirty", "--abbrev"], stderr=stdout)
            .decode()
            .strip()
        )
    if "-" in v:
        bv = v[: v.index("-")]
        bv = bv[: bv.rindex(".") + 1] + str(int(bv[bv.rindex(".") + 1 :]) + 1)
        sempre = "dirty" if v.endswith("-dirty") else "commit"
        pippre = "alpha" if v.endswith("-dirty") else "pre"
        build = subprocess.check_output(["git", "rev-parse", "--short", "HEAD"]).decode().strip()
        number_since = (
            subprocess.check_output(["git", "rev-list", v[: v.index("-")] + "..HEAD", "--count"]).decode().strip()
        )
        semver = bv + "-" + sempre + "+" + build
        pipver = bv + pippre + number_since
        winver = v[: v.index("-")] + "." + number_since
    else:
        semver = v
        pipver = v
        winver = v + ".0"

    with open("version", "w") as f:
        print("Semantic version is " + semver)
        f.write(semver)
    with open("pip_version", "w") as f:
        print("PIP version is " + pipver)
        f.write(pipver)
    with open("win_version", "w") as f:
        print("Windows version is " + winver)
        f.write(winver)
except Exception as e:
    print("Error calling git")
    print(e)