Use A Cabeca Python 2 Edicao Download Pdf Apr 2026

def add(x, y): return x + y

else: print("Invalid Input")

def multiply(x, y): return x * y

if choice == '1': print(num1, "+", num2, "=", add(num1, num2)) use a cabeca python 2 edicao download pdf

def subtract(x, y): return x - y