Get git history statistics

git-history-stats.py

import sys
import subprocess

import packaging.version
import tabulate

out = subprocess.check_output(["git", "tag"]).decode("UTF-8")
current_branch = subprocess.check_output(["git", "rev-parse", "--abbrev-ref", "HEAD"])
if not current_branch:
    sys.exit("Not on a branch")
current_branch = current_branch.decode("UTF-8").strip()
tags = out.splitlines()
tags.sort(key=packaging.version.Version)
tags.append(current_branch)
lines = list()
for before, after in zip(tags, tags[1:]):
    stat = subprocess.check_output(["git", "diff", "--shortstat", "%s..%s" % (before, after)])
    stat = stat.decode("UTF-8")
    files, _, _, insertions, _, deletions, _ = stat.split()
    lines.append([after, files, insertions, deletions])
out = tabulate.tabulate(lines, headers=["version", "files", "insertions", "deletions"])
print(out)

# Example of output:

"""
version       files    insertions    deletions
----------  -------  ------------  -----------
v1.12.1         610         22399         7840
v1.14           177          3889         1865
v1.14.1           4            14            5
...
devel           1019          4923         2291
"""

Requires packaging and tabulate