How should I exit this python program?

Question

quit2 = True
while quit2 == True:
    delete = input('\nIf you would like to delete a guest, enter their guest number. '
                   '\nIf you would  like to skip this step press Enter.')

if isinstance(delete, int):
    list[delete].remove()
else:
    break

I can't use quit2 = '' and While not quit2 by the way.

Possible duplicate of [Terminating a Python script](https://stackoverflow.com/questions/73663/terminating-a-python-script) — ababak, Oct 02 '19 at 15:14
if you dont set new value to quit2 will never change... (list[delete].remove()) doesnt make sense for me — Wonka, Oct 02 '19 at 15:16
What's the point of `quit2` if you aren't allowed to modify it? Just use `while True:` if you have an explicit `break` condition in the loop. — chepner, Oct 02 '19 at 15:24
`delete` will never be an instance of `int`; `input` always returns a `str`. You probably want `delete = int(delete)`, with a `try` statement to catch any errors in the conversion attempt. — chepner, Oct 02 '19 at 15:25

score 1 · Answer 1 · answered Oct 02 '19 at 15:29

Assuming that the if statement not being in the while loop is a formatting issue in the question, then the only problem with this code is that the if statement condition will never be true, since input() always returns a string, not an int.

Instead of using an if/else block, maybe try a try/except block:

while True:  # Don't need 'quit2', since it's never going to change
    delete = input('\nIf you would like to delete a guest, enter their guest number. '
                   '\nIf you would  like to skip this step press Enter.')

    try:
        delete = int(delete)
        list[delete].remove()
    except ValueError:  # if int(delete) fails because the string isn't numeric, exit loop
        break
    except IndexError:  # if list index out of range, let them try again
        print("That guest doesn't exist. Please try again.")
        continue

score 0 · Answer 2 · answered Oct 02 '19 at 15:19

0

use break inside your while loop inside an if so the rest of your code will continue, but if you want to terminate it: import sys and use sys.exit()

answered Oct 02 '19 at 15:19

Martin Pavelka

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How should I exit this python program?

I can't use quit2 = '' and While not quit2 by the way.

2 Answers2