python - 如何在 Tkinter 中显示字符串变量？

Question

我正在尝试用 python 创建一个 GUI 程序来生成随机彩票号码。我想要一个菜单​​栏来选择强力球或 super 百万。选择后，会有按钮让用户选择显示多少张门票。但我无法使该方法发挥作用。我想在单击按钮时显示不同行的数字列表，但它确实显示了任何内容。我还没有完成，因为它不起作用。我是Python和编程新手，请帮助!谢谢!

from tkinter import *
import random

class lotteryNum:
    def __init__(self):
        window=Tk()
        window.title("Lottery Number Generator")

        menubar = Menu(window)
        window.config(menu=menubar)

        self.pbLst = [x for x in range(1,70)]
        self.pbLst2=[x for x in range(1,27)]
        self.mmLst = [x for x in range(1,76)]
        self.mmLst2=[x for x in range(1,16)]
        self.usingLst=["*"]*6



        #Type Menu
        typeMenu = Menu(menubar, tearoff = 0)
        menubar.add_cascade(label = "Which Lottery", menu = typeMenu)
        typeMenu.add_command(label="Powerball", command= self.powerBall)
        typeMenu.add_command(label="Mega Milion", command= self.megaMillion)


        #Exit menu
        exitmenu = Menu(menubar, tearoff = 0)
        menubar.add_cascade(label = "Exit", menu = exitmenu)
        exitmenu.add_command(label = "Quit", command = window.quit)

        #Welcome label
        Label(window, text="Welcome to Lottery Generator!").pack()

        frame=Frame(window)
        frame.pack()

        #Text Label
        self.showResults = StringVar()
        Label(frame, text=self.showResults).pack()




        Button(window, text="$2", command=self.runLottery()).pack(side=LEFT)

        window.mainloop()


    def powerBall(self):
        # random.shuffle(self.pbLst)
        # random.shuffle(self.pbLst2)
        self.usingLst=self.pbLst
        self.usingLst2=self.pbLst2

    def megaMillion(self):
        # random.shuffle(self.mmLst)
        # random.shuffle(self.mmLst2)
        self.usingLst=self.mmLst
        self.usingLst2=self.mmLst2

    def runLottery(self):
        random.shuffle(self.usingLst)
        random.shuffle(self.usingLst2)
        self.usingLst[:5].extend(self.usingLst2[0])
        self.showResults.set(self.usingLst)





lotteryNum()

Answer 1

我认为如果您更改此行，您的代码应该可以工作:

Label(frame, text=self.showResults).pack()

对此:

Label(frame, textvariable=self.showResults).pack()