为什么此函数将if elif链接到return语句并抛出EOF？

Question

我不知道为什么会出现意外的EOF。我觉得缩进都是正确的，但是由于某种原因，返回值链接到if-elif ... if有意义的地方。在eclipse中，它具有链接所有语句的行。

def randomCard():
    num1 = random.randint(1, 13)
    num2 = random.randint(1, 4)
    cardnum1 = ""
    cardnum2 = ""


    if num1 == 11:
        cardnum1 = "Q"
    elif num1 == 12:
        cardnum1 = "J"
    elif num1 == 13:
        cardnum1 = "K"
    elif num1 < 10:
        cardnum1 = str(num1)
    else:
        cardnum1 = '10'



    if num2 == 1:
        cardnum2 = "S"
    elif num2 == 2:
        cardnum2 = "H"
    elif num2 == 3:
        cardnum2 = "D"
    elif num2 == 4:
        cardnum2 = "C"
    else:
        cardnum2 = 'S'


    return cardnum1 + cardnum2

结果应该是函数2-A和西装S，H，D，C image of the problem code in eclipse所返回的随机卡片