Tkinter全局变量错误

Question

UnboundLocalError:赋值前引用的局部变量“”userScore“”

UnboundLocalError:赋值前引用的局部变量“”comScore“”

我已经尝试将它们声明为全局变量，并将它们作为参数传递(有效，但每次都会重置分数)。下面是我的代码：

userScore = 0
comScore = 0
options = [[comRock, 'Rock'], [comPaper, 'Paper'], [comScissors, 'Scissors']]

# def start():
#    startFrame.pack_forget()
#    visualFrame.pack()
#    controlFrame.pack()


def play(img, userIn):
    comIn = random.choice(options)
    Label(visualFrame, image=img, borderwidth=0, highlightthickness=0).grid(row=0, column=0)
    Label(visualFrame, image=comIn[0], borderwidth=0, highlightthickness=0).grid(row=0, column=2)
    Label(visualFrame, image=vsImg, borderwidth=0, highlightthickness=0).grid(row=0, column=1)

    if userIn == comIn[1]:
        Label(visualFrame, image=tieImg, borderwidth=0, highlightthickness=0).grid(row=0, column=0, columnspan=3)
    elif (userIn == "Rock" and comIn[1] == "Scissors") or (userIn == "Scissors" and comIn[1] == "Paper") \
            or (userIn == "Paper" and comIn[1] == "Rock"):
        Label(visualFrame, image=wonImg, borderwidth=0, highlightthickness=0).grid(row=0, column=0, columnspan=3)
        userScore += 1
    else:
        Label(visualFrame, image=lostImg, borderwidth=0, highlightthickness=0).grid(row=0, column=0, columnspan=3)
        comScore += 1

    Label(visualFrame, text=str(userScore) + ':' + str(comScore)).place(x=295, y=205)

Answer 1

紧跟在函数定义之后声明userScore global

def play(img, userIn):
    global userScore
    ...