尝试计算和打印整数时，获取“int”对象不是可下标的错误

Question

I'm trying to write a simple program to calculate the Collatz COnjecture but I keep getting the error

    Traceback (most recent call last):
File "C:/Users/457700/Desktop/collatzconjecture.py", line 11, in <module>
if int(n[-1]) == "0" or int(n[-1]) == "2" or int(n[-1]) == "4" or int(n[-1]) == "6" or int(n[-1]) == "8":
TypeError: 'int' object is not subscriptable

I'm not sure why this is happening, other similar posts on the site failed to resolve the issue. here's the rest of my code for context.

#This program will calculate the Collatz Conjecture

repeat = "y"

while repeat[0].lower() == "y":

     n = int(input("Enter n: "))

     while n != 1:

         if n[-1] == "0" or n[-1] == "2" or n[-1] == "4" or n[-1] == "6" or n[-1] == "8":
             n = n/2
             print(n)
     else:
         n = n * 3
         n = n + 1
         print(n)

repeat = input("Repeat? (Y/N): ")

Answer 1

The problem is that n is an int , so you can only use n[] for data types that are subscritable like lists , tuples , iterables in general.

So if you just want to match the value: instead of n[-1] == '0' write n == 0 and so on.