typeguard
https://pypi.org/project/typeguard/
https://github.com/agronholm/typeguard
Run-time type checker for Python
（mypyなどはRun-timeではない）
#espnet で見つけた：assert check_argument_types()
https://github.com/espnet/espnet/blob/v.0.10.6/espnet2/bin/asr_inference.py#L81