[Solved] Why is there no output?

Question

I tried to programm a basic numerical differential equation solver using the runge kutter method using python but at as rightnow I get no output even though it doesn't give me an error.

I would be happy if someone could tell me what I'm doing wrong. Thanks in advance

My code is below:
https://code.sololearn.com/cLxPy2zgt1Zj/?ref=app

Answer 1

Yahya Bey it works because in this case while loop only runs once.
a+=1 might be the solution.
a+=a makes no sense.

Answer 2

You have a = 0, intially..
And a+=a is also 0 always.. So it is infinite loop..

Answer 3

Tim nööö... i often need a 2nd person to debug.
One becomes blind after a certain time.
Great stuff by the way.

Answer 4

Jayakrishna🇮🇳 Oma Falk thank you very much
Sorry for the dumb question should have spotted it myself

Answer 5

Tim No problem.
It took lot time for me.. I found it last...
It Happend to me also..

Answer 6

I dont know why did it work but put 4 whitespaces in front of return