如何在Python上一次将if语句设置为小于和大于？

Question

a = int(input("Enter choice: "))
if a > 3 and a < 1:  #the issue is here how can i rewrite it to allow this?
    print("Invalid choice")
else:
    print("Correct choice")

As you can see i'd like it to allow "a" to be less than 1 and greater than 3, but the way I wrote it does not work.

Answer 1

You're using the wrong conditional.

To check if either condition is satisfied, use or :

if a > 3 or a < 1:

To check if both conditions are satisfied (never possible in this case, of course), you use and .

Answer 2

You can chain the conditions in the opposite way:

if 1 <= a <= 3:
    print("Correct choice")
else:
    print("Invalid choice")