sage: R = PolynomialRing(QQ, 'x,y,z')
sage: s = ZZ.random_element(1,5).abs()
sage: gs = [ R.random_element() for idx in range(s) ]
sage: R = PolynomialRing(QQ, 'x,y,z')
sage: s = ZZ.random_element(1,5).abs()
sage: gs = [ R.random_element() for idx in range(s) ]