from sqrt import sqrt

print("Pass" if (None == sqrt(None)) else "Fail")
print("Pass" if (None == sqrt('')) else "Fail")
print("Pass" if (3 == sqrt(9)) else "Fail")
print("Pass" if (0 == sqrt(0)) else "Fail")
print("Pass" if (4 == sqrt(16)) else "Fail")
print("Pass" if (1 == sqrt(1)) else "Fail")
print("Pass" if (5 == sqrt(27)) else "Fail")
