r a more structured introspection API, use inspect.signature() instead.

    Alternatively, use getfullargspec() for an API with a similar namedtuple
    based interface, but full support for annotations and keyword-only
    parameters.

    Deprecated since Python 3.5, use `inspect.getfullargspec()`.
    zhinspect.getargspec() is deprecated since Python 3.0, use inspect.signature() or inspect.getfullargspec()r(