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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 initialize(self, **kwargs):
 """ Transfer functions may need additional information before the supplied numpy array can be modified in place. For instance, transfer functions may have state which needs to be allocated in memory with a certain size. In other cases, the transfer function may need to know about the coordinate system associated with the input data. """

        if not set(kwargs.keys()).issuperset(self.init_keys):
            raise Exception("TransferFn needs to be initialized with %s"
                            % ','.join(repr(el) for el in self.init_keys))