lista = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20]
list = [1, 1, 2, 3, 5, 8, 13]
# Imprime los numeros Pares
print lista[1:20:2]
# Imprime nuemeros Impares
print lista[0:20:2]
print(list[list[4]])
