Printing During a Loop

[buran]

So, first of all, this is not IDLE. It says Python IDLE, but in fact it's misleading. In python world IDLE normally refers to a very basic desktop software, written with python and tkinter, that comes with python. It is included with Windows distribution, but has to be installed on Linux and I guess - on Mac. I guess they use the name because it stands for Integrated Development and Learning Environment, but again, it's confusing.

What you have is some sort of online IDE/REPL (Read–eval–print loop). That's why it timed out. And I guess they perform some fix/replace for the quotes behind the scene before they run the code. Probably that is also the reason why there is some delay when present the output. We cannot say more because we don't see the body of the loop, nor we know the specific online tool.

I would advise that you work offline in a IDE (even you can use the real IDLE, although it's considered poor IDE) and test/try your code.
You can use https://replit.com/languages/python3 if you want to test in different online environment.

EDIT
I see, you have tried https://www.online-python.com/
There it will raise error with incorrect quotes. Same in https://replit.com