If statement not working with logical operators python

Can anyone look at my code to create a function which takes two numbers and tells which one is positive and which one is negative? My code is getting stuck at first if statement. The error I get is invalid syntax.

FirstInteger = input(("Enter your first integer:"))
SecondInteger = input("Enter your second ninteger:")

def PositveOrNegative(num1, num2):
    {
    if  num1 == 0 or num2 == 0:
     print("You have entered zero as one of the integers. Please choose a non-nuetral number.")
         elif   num<1 and num2>0:
              print("FirstInteger is negative and SecondInteger is positive")
                  elif   num2 < 0 and num1 > 0:
                         print("FirstInteger is positive and SecondInteger is negative")
    }

PositveOrNegative(FirstInteger, SecondInteger)