根据单选按钮的一部分打印文本

Question

我试图在我的脚本中修复的部分将显示一个带有两个单选按钮和一个保存按钮的窗口。 单击该按钮时，将打印一条消息，该消息取决于是否选择了某个选项。

from tkinter import *
from tkinter import ttk

class MyApp(Tk):

    def __init__(self):
        Tk.__init__(self)
        container = ttk.Frame(self)
        container.pack(side="top", fill="both", expand = True)
        self.frames = {}
        for F in (PageOne, PageTwo):
            frame = F(container, self)
            self.frames[F] = frame
            frame.grid(row=0, column=0, sticky = NSEW)
        self.show_frame(PageOne)

    def show_frame(self, cont):
        frame = self.frames[cont]
        frame.tkraise()

    def get_page(self, classname):
        for page in self.frames.values():
            if str(page.__class__.__name__) == classname:
                return page
        return None

如果选择并保存单选按钮1，那么我正在尝试在Validate功能中修复类PageOne，然后我想打印小量点胶，如果选择并保存了单选按钮2，那么我想打印中量点胶。

class PageOne(ttk.Frame):
    def __init__(self, parent, controller):
        ttk.Frame.__init__(self, parent)
        ttk.Label(self, text='PageOne').grid(padx=(20,20), pady=(20,20))
        self.controller = controller
        self.make_widget(controller)

    def make_widget(self, controller):
        self.some_input = StringVar
        self.some_entry = ttk.Entry(self, textvariable=self.some_input, width=8) 
        self.some_entry.grid()

        self.v = StringVar()
        self.v.set("b")

        button1 = ttk.Button(self, text='Next Page',
                              command=lambda: controller.show_frame(PageTwo))
        button1.grid()
        Rad1 = ttk.Radiobutton(self, text="SMALL",variable=self.v, value="a")                   
        Rad1.grid()

        Rad2 = ttk.Radiobutton(self, text="MEDIUM",variable=self.v, value="b")                  
        Rad2.grid()

        button2 = ttk.Button(self, text="SAVE", command=validate)
        button2.grid()

    def validate(self):
       value = self.v.get()
       if value == "a":
           print("Small Amount Dispensing")
       elif value == "b":
           print("Medium Amount Dispensing")
       else:
           print("An option must be selected")
app = MyApp()
app.title('Multi-Page Test App')
app.mainloop()
``````

Answer 1

你必须使用self. in command=self.validate

 button2 = ttk.Button(self, text="SAVE", command=self.validate)