from zeep import helpers, Client
import types


class SoapConnector(object):
    def __init__(self, base_url):
        self._client = Client(base_url)

    def send(self, method, data):
        connector = getattr(self._client.service, method)
        result = connector(**data)
        return helpers.serialize_object(result) \
            if isinstance(result, types.ListType) or isinstance(result, types.ClassType) else result


client = SoapConnector("http://www.webservicex.net/ConvertSpeed.asmx?WSDL")
data = {
    "speed": "100",
    "FromUnit": "kilometersPerhour",
    "ToUnit": "milesPerhour"
}
result = client.send('ConvertSpeed', data)
print result