Why this code says x not defined in line 5

Question

def add_numbers(x, y):
total = x + y
return total
print("This won't be printed")
print(x*y)
k=5;l=8
print(add_numbers(k, l))

Answer 1

Because it's outside the function and you can't access local variable outside the function.

Answer 2

i think, anything after return won't be printed

Answer 3

Because x & y is local variable , they only accessable in the function body.