view mercurial/utils/hashutil.py @ 52032:09a54892b7ee

mergestate: reduce the number of attribute lookups

This code is called a lot during updates, this is a very small but also very
easy thing to do.

from __future__ import annotations

import hashlib

try:
    from ..thirdparty import sha1dc  # pytype: disable=import-error

    sha1 = sha1dc.sha1
except (ImportError, AttributeError):
    sha1 = hashlib.sha1