Frames, die oben auf andere Frames in tkinter zeigen

Question

Ich versuche, eine einfache GUI mit mehreren Frames in Python mit Tkinter zu machen, aber was passiert, ist ein Frame wird über dem anderen Frame angezeigt. Kann mir jemand helfen, warum das so ist und wie es behoben werden kann? Hier ist mein Code: ‚‘‘ SCRATCH GUI von Sigton

This is a GUI built on Dylan5797's Scratch API 
''' 

import tkinter as tk 
from tkinter import ttk 

import scratchapi 

LARGE_FONT = ("Verdana", 12) 

class ScratchGUIApp(tk.Tk): 

    ''' 
    Main backend class, this is what makes stuff work. 
    ''' 

    def __init__(self, *args, **kwargs): 

     ''' Constructor ''' 

     # Call the parents constructor 
     tk.Tk.__init__(self, *args, **kwargs) 

     # Set the window title 
     tk.Tk.wm_title(self, "Scratch GUI") 

     # Create the container 
     self.container = tk.Frame(self) 
     self.container.pack(side="top", fill="both", expand=True) 

     # And configure the grid 
     self.container.grid_rowconfigure(0, weight=1) 
     self.container.grid_columnconfigure(0, weight=1) 

     # Create a dictionary of frames and append all pages to it 
     self.frames = {} 

     for f in (LoginPage, MainPage): 

      frame = f(self.container, self) 

      self.frames[f] = frame 

      frame.grid(row=0, column=0, sticky="nsew") 

     # Set the starting page 
     self.show_frame(LoginPage) 

    def show_frame(self, cont): 

     # A simple function to switch pages 

     frame = self.frames[cont] 
     frame.tkraise() 

class LoginPage(tk.Frame): 

    ''' 
    This is all content on the login page 
    ''' 

    def __init__(self, parent, controller): 

     ''' Constructor ''' 

     # Call the parents constructor 
     tk.Frame.__init__(self, parent) 

     self.parent = parent 
     self.controller = controller 

     # Add the title 
     self.title = ttk.Label(self, text="Log in to your Scratch account", font=LARGE_FONT) 
     self.title.grid(row=0,column=0,columnspan=2,pady=10) 

     # Add the login form 
     self.usernameTag = ttk.Label(self, text="Username:") 
     self.usernameTag.grid(row=1,column=0,sticky="e",pady=2) 
     self.usernameEntry = ttk.Entry(self) 
     self.usernameEntry.grid(row=1,column=1,pady=2) 
     self.passwordTag = ttk.Label(self, text="Password:") 
     self.passwordTag.grid(row=2,column=0,sticky="e",pady=2) 
     self.passwordEntry = ttk.Entry(self) 
     self.passwordEntry.grid(row=2,column=1,pady=2) 

     # Just in case theres anything to report 
     self.errorMessage = ttk.Label(self, text="", foreground="red") 
     self.errorMessage.grid(row=3,column=0,columnspan=2,pady=5) 

     # Add the disclaimer 
     self.subtitle = ttk.Label(self, text="Account information is not collected in any way.") 
     self.subtitle.grid(row=4,column=0,columnspan=2) 

     # And finally add the login button 
     self.button = ttk.Button(self, text="Login", 
           command= lambda: self.login()) 
     self.button.grid(row=5,column=0,columnspan=2,pady=10) 

    def login(self): 

     # Attempts to log the user in to the scratchapi 

     usernameData = self.usernameEntry.get() 
     passwordData = self.passwordEntry.get() 

     if usernameData == "" or passwordData == "": 
      # Stop the function if the fields are empty. 
      self.errorMessage.config(text="These fields are required.") 
      return 

     # Attempt to login to the scratchapi with the given username and password 

     try: 
      scratch = scratchapi.ScratchUserSession(usernameData, passwordData) 
     except: 
      # Stop the function if there was an error 
      self.errorMessage.config(text="Login failed.") 
      return 

     self.controller.show_frame(MainPage) 

class MainPage(tk.Frame): 

    ''' 
    This is all content on the main page. 
    ''' 

    def __init__(self, parent, controller): 

     ''' Constructor ''' 

     # Call the parents constructor 
     tk.Frame.__init__(self, parent) 

     self.parent = parent 
     self.controller = controller 

     self.label=ttk.Label(text="hi") 
     self.label.pack(in_=self) 

app = ScratchGUIApp() 
app.mainloop() 

Answer 1

Die Rahmen erscheinen genau, wie sie should.The Problem ist, dass Sie die‚hallo‘-Label im Hauptfenster setzen, die auch wo Sie den Behälter für die Rahmen setzen. Obwohl Sie den Parameter _in verwenden, müssen Sie dieses Label ein Elternteil von self aufgrund der Art, wie dieser bestimmte Code funktioniert (durch Heben und Senken von Frames) haben.