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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 create_custom_field(self, field_name, data_type, options=[], visible_in_preference_center=True):
 """Creates a new custom field for this list."""

        body = {
            "FieldName": field_name,
            "DataType": data_type,
            "Options": options,
            "VisibleInPreferenceCenter": visible_in_preference_center}
        response = self._post(self.uri_for("customfields"), json.dumps(body))
        return json_to_py(response)