Simple caculator program giving error, please let me know what I am missing?

Question

https://code.sololearn.com/cYjStNkzy9LV/#py

Answer 1

No error, sololearn requires that all inputs be given at the start so you need to end with quit. Program will work better if run on idle or some local editor

Answer 2

It seems that, because sololearn gets all the arguments beforehand, it is not able to deduce the argument after the first input, so you cannot have input inside an if-else if you have input outside it, this is not the default python behaviour. Here is an examples where it shows the same error:

https://code.sololearn.com/cJJInw09Hi5J/?ref=app