Question

我有一个按钮保存条目中的内容，并且由于某种原因，它没有正确地将其保存到该功能的外部列表中，就像在函数Submit（）里面一样，它记住条目值就好了。以下是设置条目的功能部分：

Q8answer = Entry(r)
Q8answer.config(fg = "blue",bg = "white",font = ("Arial",20),)
Q8answer.place(relx = 0.5,rely = 0.5,anchor = "center")

submit = Button(r, text = "Submit THIS Answer",command = Submit)
submit.place(relx = 0.5, rely = 0.8, anchor = "center")

这是名为Submit（）的函数：

def Submit():
    answers[7] = str(Q8answer.get())
    print(answers)

顺便说一下，我确实需要全部化所有变量，因为其他答案是按钮问题（答案[0]到答案[6]）的多项选择，所有答案都正常工作并保存到列表中。

编辑：还有更多背景：

    Q8answer.place_forget()
    submit.place_forget()

    Q8answer = Entry(r)
    Q8answer.config(fg = "blue",font = ("Arial",20),)

    submit = Button(r, text = "Submit THIS Answer", command = Submit() )

    Amode = 0
    Bmode = 0
    Cmode = 0
    Dmode = 0
    Abutton.config(image = unselected)
    Bbutton.config(image = unselected)
    Cbutton.config(image = unselected)
    Dbutton.config(image = unselected)

    if mode == 1:
        if questionNumber < len(questions):
            questionNumber += 1
            if questionNumber == 8:
                Correct()
            elif questionNumber == 7:
                Abutton.place_forget()
                Bbutton.place_forget()
                Cbutton.place_forget()
                Dbutton.place_forget()

                Alabel.place_forget()
                Blabel.place_forget()
                Clabel.place_forget()
                Dlabel.place_forget()

                Number = Label(r,text = "Question " + str(questionNumber + 1))
                Number.config(fg = "blue",bg = "grey", font = ("Arial",15))
                Number.place(relx = 0.02, rely = 0.02 )

                question = questions[questionNumber]
                Question.place_forget()
                Question = Label(r,text = question)
                Question.config(fg = "blue",bg = "grey")
                Question.config(font = ("Arial",20))
                Question.place(relx = 0.5, rely = 0.15, anchor = "center")

                Q8answer = Entry(r)
                Q8answer.config(fg = "blue",bg = "white",font = ("Arial",20),)
                Q8answer.place(relx = 0.5,rely = 0.5,anchor = "center")

                submit = Button(r, text = "Submit THIS Answer",command = Submit)
                submit.place(relx = 0.5, rely = 0.8, anchor = "center")
            else:
                Q8answer.place_forget()
                submit.place_forget()

在else语句之后，它与此无关。

Answer 1

我认为问题在于您将按钮设置为执行的命令。

例如以下代码

tk.Button(..., command=submit())

在此代码中，即使在主循环运行之前，也将执行命令commit（），并且在那个时间实例中，答案[7]不存在。

只需将命令样式更改为

tk.Button(..., command=submit)

它应该可以工作。

更多-（有用的信息）

对于需要提供参数的函数，lambda关键字的用法如下：

tk.Button(..., command=lambda x: submit(x))

列表不保存条目数据Tkinter

1 个答案: