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Python Python Collections (2016, retired 2019) Lists Shopping List Take Three

Bartlomiej Szymański
Bartlomiej Szymański
4,182 Points
Posted by Bartlomiej Szymański
Bartlomiej Szymański
4,182 Points

I forgot to use round brackets and got no error message

Hi there,

I was trying to run this code:

new_item = input("> ")

if new_item.upper == 'DONE' or new_item.upper() == 'QUIT':
    break
elif new_item.upper == 'HELP':
    show_help()
    continue
elif new_item.upper == 'SHOW':
    show_list()
    continue
else:
add_to_list(new_item)

I didn't use round brackets after upper method and I spotted that:

1) There was no error message.

2) I couldn't use 'HELP'/'SHOW'/'DONE', this was added as a additional item.

Can someone explain me why?

Regards, Bartek

1 Answer

KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,971 Points
KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,971 Points

If you print new_item.upper you'll see something like this:

<built-in method upper of str object at 0x7f769b112a08>

which obviously doesn't = 'HELP', 'SHOW' or 'DONE'

The upper method will only be called with the parentheses