Why does this code display "no output" ?

Question

https://code.sololearn.com/cCbVrV5A4PUT/?ref=app

Answer 1

Python doesn't ignore spaces. The actual output of your code would be a single space. It's just that if the output of your code is "invisible" (like a space), Sololearn displays the message "No output" to let you know that your program has finished (and there's no visible output), so that you don't keep waiting for half an hour

Answer 2

Ayan [I'm Also Inside Of Exams] I know the code didn't work because of the extra space between "hello" and "world"...but my question is...so does python ignore upto one space between strings?

Answer 3

Anna Thanks, that clarified my doubt!

Answer 4

Lothar Did you try the code in sololearn?

Answer 5

Lothar That's great, you tested the code on various devices. But whenever I run this code in sololearn from my android device, the output is same : No output.
Maybe the output varies according to various devices and environments. 😊👍
Oh, and by the way, when I run the code on windows 7 Spyder(Python 3.7), it doesn't show any output,I.e., it displays blank space.Also, I have noticed that python ignores upto one space.
If I run print(str[8]) for the above code, the output is o, but it should have been w if the spaces are counted.
I guess the 'no output ' rule is for sololearn only.

Answer 6

I think because it's just printing a space, sololearn doesn't want you to get confused that you are printing "nothing". That, or it's a pythin thing, not sure.

if you do print(str[6:]) or any other print with other letters involved, it works fine.

Answer 7

Yes it's interesting how white space is considered to be "No output" by Code playground, probably for the reasons mentioned by Anna.

Answer 8

https://code.sololearn.com/cpM3Bj1w0aVC/?ref=app

Very interesting 🤔

Answer 9

I did some tests again now on various devices. The behaviour is always the same:

- "No output" is only shown if no print() function is called
- As soon as you envoke print function like this: print() the message does not appear also not if you print "spaces". This does not work and creates the message:

while 1==2:
print("hello")

Reason is that this part of programm never will be executed.

test devices: iPhone with pythonista and solo app, iPad with pythonista and solo app, windows 7 with thonny, raspberry pi3 with debian and thonny, SoloLearn website with playground.

Answer 10

Maybe ?!!

Answer 11

when i try this code on my device it 'shows' the 'invisible space'. But it does NOT say anything like 'No output'. Are you sure it should - Anna?

Answer 12

Yes, my try was in SoloLearn on an iOS device. And same result on a local python environment, also on iOS.

Answer 13

python count spaces because anything inside string quote everything is string and indexs are start counting from 0 and goes like this 0123456789.
print(str[7]) is w.
For sololearn playground whitespace are considerd empty char by default and empty char are set to 'no output' as default.

Answer 14

visit my YouTube channel gyankeeda academy for more information