human
I wrote the below code

    def func_in(*args, **kwargs):
        if (not conf.crypto_valid):
            raise ImportError('Cannot    execute    crypto-related    method!    Please    install    python-cryptography    v1.7    or    later.')
        return func(*args, **kwargs)
    return func_in

What's a good function header?
assistant
#Here's a good function header.

def crypto_validator(func):