python - 向 Tkinter 添加单选按钮

Question

我和我的 friend 正在制作一个显示 4 个单选按钮和文本的窗口，我们正在努力在底部添加两个按钮。

这是我们的代码:

from Tkinter import *

import time

class App:

    def __init__(self, master):


        frame = Frame(master)
        frame.pack()

        v = IntVar()

        Radiobutton(master, text="0 for not at all", variable=v, value=1).pack(side=TOP)

        Radiobutton(master, text="1 for somewhat", variable=v, value=2).pack(side=TOP)

        Radiobutton(master, text="2 for moderatly", variable=v, value=3).pack(side=TOP)

        Radiobutton(master, text="3 for a lot", variable=v, value=4).pack(side=TOP)

        self.button = Button(master, text="BACK", fg="red", command=self.button6)
        self.button.pack(side=BOTTOM)

        self.button = Button(master, text="NEXT", fg="red", command=self.button5)
        self.button.pack(side=BOTTOM)

    def button6(self):
        print "Sam is awesome!GAJONGA" 

    def button5(self):
        print "PYTHON FOR THE WIN! GIAN SAYS PYTHON = FILTHY"

w = Label(master, text="1. Anxiety, nervousness, worry or fear")
w.pack()

master = Tk()


master.mainloop()

运行此命令会出现以下错误:

Traceback (most recent call last):
  File "/Volumes/CHROME USB/STORAGE/TKinker GUI/Radiobutton example.py", line 36,
  in <module>
    w = Label(master, text="1. Anxiety, nervousness, worry or fear")
NameError: name 'master' is not defined

Answer 1

您需要实际初始化 App 类才能执行任何操作。标签应该与所有其他小部件一起进入 init 方法内部。通常，您会将所有小部件放在框架内(例如，Radiobutton(frame, text= ...)，但如果您不打算使用框架，则无需创建它。并对齐单选按钮(与 anchor =“w”)而不是居中使它们看起来更干净。

from Tkinter import *
import time

class App:
    def __init__(self, master):
        w = Label(master, text="1. Anxiety, nervousness, worry or fear")
        w.pack()

        v = IntVar()
        Radiobutton(master, text="0 for not at all", variable=v, value=1).pack(side=TOP, anchor="w")
        Radiobutton(master, text="1 for somewhat", variable=v, value=2).pack(side=TOP, anchor="w")
        Radiobutton(master, text="2 for moderatly", variable=v, value=3).pack(side=TOP, anchor="w")
        Radiobutton(master, text="3 for a lot", variable=v, value=4).pack(side=TOP, anchor="w")

        self.button = Button(master, text="BACK", fg="red", command=self.button6)
        self.button.pack(side=BOTTOM)
        self.button = Button(master, text="NEXT", fg="red", command=self.button5)
        self.button.pack(side=BOTTOM)

    def button6(self):
        print "Sam is awesome!GAJONGA" 

    def button5(self):
        print "PYTHON FOR THE WIN! GIAN SAYS PYTHON = FILTHY" 

master = Tk()
app = App(master)
master.mainloop()