How ppl are using python Java or any back end languages?
I believe you are asking "what is a backend for" making the seperation between front end and backend is necessary for complex applications that handles any sort of services. A backend to a website could be used for handling the database for example.
I mean what code lines they are writing and why they need back end what it does?
Class and instance attributes
How does this works?
Button after Button
FYP PROJECT IDEAS
What's wrong in my code
Why this code output error?