Untitled

# entrada + validacao
def validacao():
    while True:
        avalicao1 = float(input())
        if avalicao1 >= 0 and avalicao1 <= 10 :
            break
        else:
            print("nota invalida")

    while True:
        avalicao2 = float(input())
        if avalicao2 >= 0 and avalicao2 <= 10 :
            break
        else:
            print("nota invalida")

    return avalicao1,avalicao2


## media
def calculoMedia(nota1, nota2):
    return  (nota1 + nota2)/2

while True:
    # validacao
    notas = validacao()

    # media
    media = calculoMedia(notas[0], notas[1])
    print(f"media = {media:.1f}")

    # pergunta
    fim = int(input("novo calculo (1-sim 2-nao)"))
    if fim == 1:
        continue
    elif fim == 2:
        break