Build a changelog from git commits

build-changelog.py

import re
import os
import git

semver_pattern = '(?:(\d+)\.)(?:(\d+)\.)(?:(\d+))'

BASE_DIR = os.getcwd()
g = git.cmd.Git(BASE_DIR)
commits = list(filter(None, g.log("--format=%B").splitlines()))

text = 'Change Log for <your project here>\n====================================\n\nDev\n---\r\n\n'
for commit in commits:
    search = re.search(semver_pattern, commit)
    if bool(search):
        version = '.'.join([n for n in search.groups()])
        text += '\r\n\n'
        text += version + '\n'
        text += '-----\n'
        text += '\r\n'
    if 'Merge branch' in commit or 'Merged in' in commit:
        pass
    else:
        text += '  * ' + commit + '\n'

print(text)