為什么我的記分板上的分數沒有更新？

Question

我需要幫助，為什么當 Python 龜與食物碰撞時我的分數沒有更新。 我還在下面發布了一個包含完整代碼的鏈接：

if turtle.distance(food) < 20:
            food.goto(randint(-280, 280), randint(-280, 280))
            # Adding sections
            new_section = Turtle()# Turtle() is the same as turtle.Turtle()
            new_section.shape('square')
            new_section.speed(0)
            new_section.color('orange', 'grey')
            new_section.penup()
            new_section.goto(old_position)
            sections.append(new_section)# Adds new section of body at the end of body

            # Score
            score = 0
            high_score = 0

            # Increase the score
            score = + 10


            if score > high_score:
                high_score = score
            pen.clear()
            pen.write("Score: {} High Score: {}".format(score, high_score), align="center",font=("Courier", 24, "normal"))

***Need help on updating score have also posted link below***


    screen.update()
    screen.ontimer(move, DELAY)

pastebin.com獲取完整代碼。

Answer 1

score和highscore都是move()本地的，並且每次運行時都重新設置為零。 它們需要是全局的，並聲明為global 。

如果我們從分數的角度來看move() ，它看起來像：

def move():
    score = 0
    high_score = 0
    # Increase the score
    score = + 10
    if score > high_score:
        high_score = score
    pen.write("Score: {} High Score: {}".format(score, high_score), ...))

其中score和highscore對於move()是本地的。 我們真正期待的更像是：

score = 0
high_score = 0

def move():
    global score, high_score

    # Increase the score
    score += 10
    if score > high_score:
        high_score = score
    pen.write("Score: {} High Score: {}".format(score, high_score), ...))

閱讀有關 Python global關鍵字和 Python 全局變量的一般信息。