Neural network don‘t work in Python

Question

https://code.sololearn.com/cm4l3i3G60vw/?ref=app
This is my code and I try to predict a further number. But I don‘t understand the occurring error. Please help me.
Edit: The original code was for two inputs, but I tried to edit the code to three inputs. I think this is my problem
Can anyone help me?

Answer 1

It is not very true because most of the nueral network programming is done with the help of Python