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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 read(self, stream):
 """Reads the topology from a stream or file."""

        def read_it(stream):
            bytes = stream.read()
            transportIn = TMemoryBuffer(bytes)
            protocolIn = TBinaryProtocol.TBinaryProtocol(transportIn)
            topology = StormTopology()
            topology.read(protocolIn)
            return topology
            
        if isinstance(stream, six.string_types):
            with open(stream, 'rb') as f:
                return read_it(f)
        else:
            return read_it(stream)