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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 data(self):
 """ Helper class for parsing JSON POST data into a Python object. """

        if self.request.method == 'GET':
            return self.request.GET
        else:
            assert self.request.META['CONTENT_TYPE'].startswith('application/json')
            charset = self.request.encoding or settings.DEFAULT_CHARSET
            return json.loads(self.request.body.decode(charset))