Python exception handling :

while True:
    try:
        number=int(input("whats your fav number ? \n"))
        print(18/number)
        break

    except ValueError:
        print("make sure and enter a number ")
    except ZeroDivisionError:
        print(" dont pick zero")

output :

whats your fav number ? 
mht
make sure and enter a number 
whats your fav number ? 
0
 dont pick zero
whats your fav number ? 
18
1.0