def cross(self, other):
        if len(self._v) != 3 or len(other._v) != 3:
            raise ValueError, 'cross multiplication only for 3d vectors'
        p, q = self._v, other._v
        r = [ p[1] * q[2] - p[2] * q[1],
              p[2] * q[0] - p[0] * q[2],
              p[0] * q[1] - p[1] * q[0] ]
        return V(r)
should raise an exception for an wrong HTTP method (34)
dataset/ETHPy150Open hhatto/autopep8/test/vectors_example.py/V.cross--crossover with--dataset/ETHPy150Open biicode/client/test/rest/rest_api_test.py/RestApiTest.test_http_method_not_implemented