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#!/usr/bin/env python3
##
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""
Arbitrary utilities and polyfills.
"""
import random
import sys
if sys.version_info >= (3, 8):
from typing import TypedDict
else:
from typing_extensions import TypedDict
def _randbytes(n: int) -> bytes:
"""Polyfill for random.randbytes in Python < 3.9"""
return bytes(random.choices(range(256), k=n))
randbytes = getattr(random, "randbytes", _randbytes)
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