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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 parse(self, stream, media_type=None, parser_context=None):
 """ Parses the incoming bytestream as a URL encoded form, and returns the resulting QueryDict. """

        parser_context = parser_context or {}
        encoding = parser_context.get('encoding', settings.DEFAULT_CHARSET)
        data = QueryDict(stream.read(), encoding=encoding)
        return data