human
What is a the Python program you requested given the following:
Complete the below
def firstmethod(method):

    ''''Returns a functions that with a list of instances,
    finds the first instance that returns a value for the given method.
    The list can also contain promises (:class:`promise`.)'
    '''
assistant
#Here is the Python program you requested.
    def _matcher(seq, *args, **kwargs):
        for cls in seq:
            try:
                answer = getattr(maybe_promise(cls), method)(*args, **kwargs)
                if (answer is not None):
                    return answer
            except AttributeError:
                pass
    return _matcher