def test_Pow_is_prime():
    from sympy import Pow
    x = Symbol('x', positive=True, integer=True)
    y = Symbol('y', positive=True, integer=True)
    assert (x**y).is_prime is None

    x = Symbol('x', positive=True)
    assert (x**y).is_prime is None

    assert Pow(6, S.One, evaluate=False).is_prime != False
    assert Pow(9, S.Half, evaluate=False).is_prime is True
    assert Pow(5, S.One, evaluate=False).is_prime is True
dataset/ETHPy150Open sympy/sympy/sympy/core/tests/test_assumptions.py/test_Pow_is_prime/operator `is` -> `!=`