def test_9(): assert changePi("xyzzy") == "xyzzy"
def test_7(): assert changePi("") == ""
def test_8(): assert changePi("pixx") == "3.14xx"
def test_5(): assert changePi("p") == "p"
def test_6(): assert changePi("x") == "x"
def test_4(): assert changePi("hip") == "hip"
def test_3(): assert changePi("pi") == "3.14"
def test_2(): assert changePi("pip") == "3.14p"
def test_1(): assert changePi("pipi") == "3.143.14"
def test_0(): assert changePi("xpix") == "x3.14x"