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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 fields(self):
 """ return all the fields and their raw values for this Orm instance. This property returns a dict with the field names and their current values if you want to control the values for outputting to an api, use .jsonable() """

        return {k:getattr(self, k, None) for k in self.schema.fields}