Question

how to write a program to “identify the line number of the function call?”

python inspect module provides options to locate the line number but,

def di():
  return inspect.currentframe().f_back.f_lineno 

this python code prints the current line number.

Answer 1

Why not use inspect.stack()?

def get_caller_lineno():
    frame, _, lineno, _, _, _ = inspect.stack()[1]
    return lineno