def get_file_info(repo, path):
    """we need change_count, last_change, nbr_committers."""
    committers = []
    last_change = None
    nbr_changes = 0
    for commit in repo.iter_commits(paths=path):
        committers.append(commit.committer)
        last_change = commit.committed_date
        nbr_changes += 1
    return nbr_changes, last_change, len(set(committers))
