Method git_hash

setup.py:120–136

The current git hash, if known.

(cls)

    @classmethod
    def git_hash(cls) -> Optional[str]:
        """The current git hash, if known."""
        if cls.__git_hash_attr is None:
            import subprocess

            try:
                cls.__git_hash_attr = (
                    subprocess.check_output(
                        ["git", "rev-parse", "HEAD"], cwd=cls._root_dir()
                    )
                    .decode("ascii")
                    .strip()
                )
            except subprocess.CalledProcessError:
                cls.__git_hash_attr = ""  # Non-None but empty.
        # A non-None but empty value indicates that we don't know it.
        return cls.__git_hash_attr if cls.__git_hash_attr else None

    @classmethod
    def string(cls) -> str: