print changes between 2 last tags

tag-changes.py

import subprocess
import sys


def git(*args):
    """
    
    :param args: the parameters for the git command 
    :return: the result of the git command as string
    """
    return subprocess.check_output(["git"] + list(args)).decode().strip()


def get_latest_tags():
    """

    :return: latest 2 tags
    """
    git1 = git("tag", "--sort=-version:refname").split("\n")[:2]
    return git1


def get_filtered_commits_rules(line):
    """
    :param line the commit message we're checking if we need to filter
    :return true iff we want to include line in notify message
    """
    return not line.startswith("- Merge")


def get_commits_messages(old, new, format_of_commit="%H %s"):
    """

    :param old: old tag
    :param new: new tag
    :param format_of_commit: format for commit message. see here: https://git-scm.com/docs/pretty-formats
    :return: the commit messages between the tags in the specified format
    """
    commit_msg = git("log", ("--pretty=format:" + format_of_commit), old + "..." + new)
    commit_msg = "\n".join([line for line in commit_msg.split("\n") if get_filtered_commits_rules(line)])
    return commit_msg


def main():
    new, old = get_latest_tags()
    msg = get_commits_messages(old.strip(), new.strip(), "• %s")
    print(msg)


if __name__ == '__main__':
    sys.exit(main())