将 tkinter 进度条链接到功能 [英] linking tkinter progress bar to function

问题描述

所以我有一个数学程序，我让用户输入 10 个问题.十个问题结束后，它会显示您答对了多少等.

so i have a maths program and i have the user entering 10 questions. once the ten questions are over it displays how many you got correct etc.

我想要做的是将进度条链接到已回答的问题数量，因此如果用户已完成 5 个问题，则进度将进行一半，然后一旦完成 10 个问题，则重新开始.我目前在这里有这个定义用于提交答案

what i want to do is link the progress bar to the amount of questions answered so if user has done 5 questions progress will be half way then once theve done 10 start all over again. i currently have this definition here for submitting the answers

def submit(self):
    try:
        user_answer = int(self.answer_strvar.get())
    except:
        return

    if eval(self.equation) == user_answer:
        print('Correct!! The Answer Was {}'.format(user_answer))
        self.correct_counter += 1
    else:
        print('Wrong!! Your Answer was: {} = {}, The Correct answer is {}'.format(self.equation, user_answer, eval(self.equation)))

    self.submit_counter += 1
    if self.submit_counter < NUM_QUESTIONS:
        self.update_equation()
    else:
        self.show_result()

        self.submit_counter = 0
        self.correct_counter = 0

其中提交计数器是用户提交的答案数量.这是我想要将其链接到的变量，该数字是完成的百分比，10 是最大值.

where as submit counter is the amount of answers submitted by user. that is the variable i want to link it to with that number being the percentage done and 10 being the maxximum.

我在主屏幕上也有一个这样的进度条

i also have a progress bar like this on the main screen

pb = ttk.Progressbar(self, orient="horizontal", length=600, mode="determinate")
pb.pack()

推荐答案

使用控制变量来设置值.

Use a control variable to set the value.

class TestProgress():
    def __init__(self):
        self.root = tk.Tk()
        self.root.title('ttk.Progressbar')

        self.val=tk.IntVar()
        self.val.set(0)
        self.pbar = ttk.Progressbar(self.root, length=300,
                    maximum=10, variable=self.val)
        self.pbar.pack(padx=5, pady=5)

        tk.Label(self.root, textvariable=self.val,
                 bg="lightblue").pack()

        ## wait 2 seconds & update
        self.root.after(2000, self.advance)
        self.root.mainloop()

    def advance(self):
        self.val.set(8)

TP=TestProgress()

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