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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 serialize(self, value, **kwargs):
 """Return a serialized copy of the dict"""

        kwargs.update({'include_class': kwargs.get('include_class', True)})
        if self.serializer is not None:
            return self.serializer(value, **kwargs)
        if value is None:
            return None
        serial_tuples = [
            (
                self.key_prop.serialize(key, **kwargs),
                self.value_prop.serialize(val, **kwargs)
            )
            for key, val in iteritems(value)
        ]
        try:
            serial_dict = {key: val for key, val in serial_tuples}
        except TypeError as err:
            raise TypeError('Dictionary property {} cannot be serialized - '
                            'keys contain {}'.format(self.name, err))
        return serial_dict