Python：我怎样才能使这个工作？

Question

我该如何做到这一点？

number = int(raw_input("Number: "))
if number != !!!!!!!!NUMBER TYPE IS NOT AN INT TYPEEE!!!!!!!!!
    print "NO!"
else
    print "YES!"

谢谢！ ：）

Answer 1

try:
    num = int(raw_input("Number: "))
    print("Yes!")
except ValueError:
    print("No!")

Answer 2

number = raw_input("Number: ")

if not number.isdigit():
    print "NO!"
else:
    print "YES!"