如何打印用户输入的 4 位数字的最后两位？

Question

# Read an integer:
a = input()

Over here I take an Input from the reader or the user who is using my app..... # Print a value: print(a[2, 3]) ...and then I want to print out only the last two digits but I am getting an error as follows: Traceback (most recent call last): File "python", line 4, in TypeError: string indices must be integers Example input what I wanted it to be : 1234 Example output what I wanted it to be : 34 Can you please explain me my error...

Answer 1

As the error message says: String indices must be integers. You give it a tuple (of integers, but it's still a tuple). You should slice it with a[-2:] .

Answer 2

Try this,

print(a[-2:])

This prints the last 2 characters of string a.

Answer 3

if you want the last two digits you can use print(a[-2:]) since python uses negative index to start form the last item. also check if the length of the input is greater than 2 characters.

if len(a) >= 2:
    print(a[-2:])