Python 3 if elif else statement isn't working

Question

After running the code if I type anything other than john or johnny, it still prints out JOHNNY!!! Why is this?

user_name = input('What is your name?')

if user_name.lower() == 'john' or 'johnny':
    print ('JOHNNY!!!')
elif user_name.lower() == 'bill' or 'billy':
    print ('BILLY!!!')
else:
    print ('Hello {0}'.format(user_name))

`user_name.lower() in ('john' or 'johnny')` and `elif user_name.lower() in ('bill' or 'billy'):` — JacobIRR, Apr 20 '18 at 21:09

score 1 · Accepted Answer · answered Apr 20 '18 at 21:09

1

You need to correct all your conditions like the following way:

if user_name.lower() == 'john' or user_name.lower() =='johnny':

A good way to do is

if user_name.lower() in {'john' ,'johnny'}:

answered Apr 20 '18 at 21:09

Md Johirul Islam

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1

Thank you soooo much, I REALLY appreciate it!!! – Zimm Apr 20 '18 at 21:34

score 0 · Answer 2 · answered Apr 20 '18 at 21:15

@JacobIRR has a better solution but you can also do what's posted below.

user_name = input('What is your name?')

if user_name.lower() == 'john' or user_name.lower() == 'johnny':
    print ('JOHNNY!!!')

elif user_name.lower() == 'bill' or user_name.lower() == 'billy':
    print ('BILLY!!!')

else:
    print ('Hello {0}'.format(user_name))

Python 3 if elif else statement isn't working

2 Answers2