Answer 1

Line 6, 13, 27 take out the sleep times and it's running.
I think we do not get enough CPU time from SL for all this sleeps.

Answer 2

Yes, it's running line by line. But it cost time to run a program. And SL gives you only a small amount of time for each run. And sleep time is also processing time.

Answer 3

Ur programs has no problem...
Sololearn emulator for somereason doesnt support this...

Try using another emulator like
Pydroid3

Answer 4

I've tried it with 0.1 sleep time at each line. Therfore you will get results. But that's nearly the max value before you get a time out (No Output).