Python 如何使tkinter程序转到上一帧？

我正在构建一个小程序，其中代码的不同部分将在不同时间调用一个对象。我想尝试让它调用前一帧，而不是重复实际代码多次。如果您需要示例，以下是我的部分代码：

    #Console Menu
    class consoleMenu(tk.Frame):

        #Initialize
        def __init__(self, parent, controller):
            tk.Frame.__init__(self, parent)

            #Setups
            consoleGuideLabel = ttk.Label(self, text = "Console Guide", font = LARGE_FONT)

            consoleItemInfoButton = ttk.Button(self, text = "Console Item Info", command = lambda: controller.show_frame(consoleItemInfo))
            consoleVersionButton = ttk.Button(self, text = "Console Version History", command = lambda: popupmsg ("Not supported just yet!"))
            consoleMainMenuButton = ttk.Button(self, text = "Main Menu", command = lambda: controller.show_frame(StartPage))

            #Placement
            consoleGuideLabel.pack(pady = 10, padx = 10)

            consoleItemInfoButton.pack()
            consoleVersionButton.pack()
            consoleMainMenuButton.pack()

这就是被不同帧多次调用的部分

    #Air - MCPE, PC, Xbox
    class mc_air(tk.Frame):

        #Initialize
        def __init__(self, parent, controller):
            tk.Frame.__init__(self, parent)

            #Item Info
            text_file = open("minecraft_air.txt", "r")
            file = text_file.read()
            text_file.close()

            #Setups
            airLabel = ttk.Label(self, text = "Minecraft - Air - 1", font = LARGE_FONT)
            airInfo = ttk.Label(self, text = file, font = NORMAL_FONT)
            exitButton = ttk.Button(self, text = "Return to Menu", command = lambda: controller.show_frame(StartPage))

            #Placement
            airLabel.pack(pady = 10, padx = 10)
            airInfo.pack()
            exitButton.pack()

上面写着：

exitButton = ttk.Button(self, text = "Return to Menu", command = lambda:      controller.show_frame(StartPage))

---

我希望能够用命令替换StartPage以转到上一个窗口。

根据我的帧切换实现，这里有一个可能的实现：

它现在有点老套，但基本上是这样的想法，

goto\u three

调用

FrameThree

实例的

return\u

，这会改变其

按钮上的
命令
以返回到调用它的帧

import Tkinter as tk

class BaseFrame(tk.Frame):
    """An abstract base class for the frames that sit inside PythonGUI.

    Args:
      master (tk.Frame): The parent widget.
      controller (PythonGUI): The controlling Tk object.

    Attributes:
      controller (PythonGUI): The controlling Tk object.

    """

    def __init__(self, master, controller):
        tk.Frame.__init__(self, master)
        self.controller = controller
        self.grid()
        self.create_widgets()

    def create_widgets(self):
        """Create the widgets for the frame."""
        raise NotImplementedError

    def goto_three(self):
        self.controller.frames[FrameThree].return_to(self.__class__)
        self.controller.show_frame(FrameThree)


class FrameOne(BaseFrame):
    """First page."""

    def create_widgets(self):
        """Create the base widgets for the frame."""
        self.button_two = tk.Button(self,
                                    anchor=tk.W,
                                    command=lambda: self.controller.show_frame(FrameTwo),
                                    padx=5,
                                    pady=5,
                                    text="Two")
        self.button_two.grid(padx=5, pady=5, sticky=tk.W+tk.E)
        self.button_three = tk.Button(self,
                                      anchor=tk.W,
                                      command=self.goto_three,
                                      padx=5,
                                      pady=5,
                                      text="Three")
        self.button_three.grid(padx=5, pady=5, sticky=tk.W+tk.E)


class FrameTwo(BaseFrame):
    """Second page."""

    def create_widgets(self):
        """Create the base widgets for the frame."""
        self.button_one = tk.Button(self,
                                    anchor=tk.W,
                                    command=lambda: self.controller.show_frame(FrameOne),
                                    padx=5,
                                    pady=5,
                                    text="One")
        self.button_one.grid(padx=5, pady=5, sticky=tk.W+tk.E)
        self.button_three = tk.Button(self,
                                      anchor=tk.W,
                                      command=self.goto_three,
                                      padx=5,
                                      pady=5,
                                      text="Three")
        self.button_three.grid(padx=5, pady=5, sticky=tk.W+tk.E)


class FrameThree(BaseFrame):
    """Third page."""

    def create_widgets(self):
        """Create the base widgets for the frame."""
        self.button_two = tk.Button(self,
                                    anchor=tk.W,
                                    command=lambda: self.controller.show_frame(FrameTwo),
                                    padx=5,
                                    pady=5,
                                    text="Two")
        self.button_two.grid(padx=5, pady=5, sticky=tk.W+tk.E)
        self.button_one = tk.Button(self,
                                    anchor=tk.W,
                                    command=lambda: self.controller.show_frame(FrameOne),
                                    padx=5,
                                    pady=5,
                                    text="One")
        self.button_one.grid(padx=5, pady=5, sticky=tk.W+tk.E)
        self.button_back = tk.Button(self,
                                     anchor=tk.W,
                                     padx=5,
                                     pady=5,
                                     text="Back")
        self.button_back.grid(padx=5, pady=5, sticky=tk.W+tk.E)

    def return_to(self, frame):
        self.button_back.config(command=lambda: self.controller.show_frame(frame))


class PythonGUI(tk.Tk):
    """The main window of the GUI.

    Attributes:
      container (tk.Frame): The frame container for the sub-frames.
      frames (dict of tk.Frame): The available sub-frames.

    """

    def __init__(self):
        tk.Tk.__init__(self)
        self.title("Python GUI")
        self.create_widgets()
        self.resizable(0, 0)

    def create_widgets(self):
        """Create the widgets for the frame."""             
        #   Frame Container
        self.container = tk.Frame(self)
        self.container.grid(row=0, column=0, sticky=tk.W+tk.E)

        #   Frames
        self.frames = {}
        for f in (FrameOne, FrameTwo, FrameThree): # defined subclasses of BaseFrame
            frame = f(self.container, self)
            frame.grid(row=2, column=2, sticky=tk.NW+tk.SE)
            self.frames[f] = frame
        self.show_frame(FrameOne)

    def show_frame(self, cls):
        """Show the specified frame.

        Args:
          cls (tk.Frame): The class of the frame to show. 

        """
        self.frames[cls].tkraise()

if __name__ == "__main__":
    app = PythonGUI()
    app.mainloop()
    exit()