Getting the error like function not defined .. suggest correct code

[micseydel]

I get prompted with input when I run your code, no error. Generally, you should provide complete instructions (e.g. input to reproduce) and not expect us to figure it out for you.

More than that, I suggest you simplify your code. Don't require us to input anything to your code unless it's absolutely required. Hard-code the relevant value(s) instead.