mercurial/utils/hashutil.py

rebase: keep str-keyed opts long enough to make `action` a str

This is just another little py3 cleanup.

Differential Revision: https://phab.mercurial-scm.org/D10891

from __future__ import absolute_import

import hashlib

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

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