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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 get_request_uri_parameters(self, as_dict=False):
 """ Return the URI parameters from a request passed to the 'validate' method The query parameters returned by this method **MUST** be included in the ``action=""`` URI of the authorization form presented to the user. This carries the original authorization request parameters across the request to show the form to the request that submits the form. :param as_dict: default ``False``. If ``True``, returns the parameters as a dictionary. If ``False``, returns the parameters as a URI-encoded string. """

    if not self.request:
      raise ValueError('request must have been passed to the "validate" method')

    return (dict if as_dict else urlencode)(self.request.REQUEST.items())