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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def __get_fault(self, replyroot):
 """ Extract fault information from a SOAP reply. Returns an I{unmarshalled} fault L{Object} or None in case the given XML document does not contain a SOAP <Fault> element. @param replyroot: A SOAP reply message root XML element or None. @type replyroot: L{Element}|I{None} @return: A fault object. @rtype: L{Object} """

        envns = suds.bindings.binding.envns
        soapenv = replyroot and replyroot.getChild("Envelope", envns)
        soapbody = soapenv and soapenv.getChild("Body", envns)
        fault = soapbody and soapbody.getChild("Fault", envns)
        return fault is not None and UmxBasic().process(fault)