stubs/django/utils/safestring.pyi (4 lines of code) (raw):
# Copyright (c) Meta Platforms, Inc. and affiliates.
#
# This source code is licensed under the MIT license found in the
# LICENSE file in the root directory of this source tree.
class SafeData(object): ...
class SafeText(str, SafeData): ...
SafeString = SafeText
def mark_safe(s: str) -> SafeString: ...