How to get git patch-id?

[jayjoshi64]

This is command-line syntax to get patch-id for a commit

git show HEAD | git patch-id 

Reference: https://git-scm.com/docs/git-patch-id

Q: How can I get the same output using GitPython?

[Byron]

You would have to use repo.patch_id() directly and add options to receive the running process, through which one then can pass the commit to generate a patch-id for. It's cumbersome, and probably easier just to Popen to run git directly.

[jayjoshi64]

I got it to work with this:

def get_patch_id(commit: str) -> str:
    """
    Get patch-id of a commit.
    a patch id is a unique ID for a patch (git show)
    ref: https://git-scm.com/docs/git-patch-id
    """
    with Repo(repo_path) as repo:
        with tempfile.TemporaryFile() as temp_file:
            # output_stream = BytesIO()
            repo.git.show(commit, output_stream=temp_file)
            temp_file.seek(0)
            return repo.git.patch_id(istream=temp_file).split()[0]