[Tkinter] Switch Frames

[Maryan]

Any help is appreciated. I'm trying to create main window(quiz), on click start button I want to switch the frame(pagetwo)etc.

from tkinter import *
from tkinter import messagebox
from tkinter import Tk
import sqlite3



# Creating DB - (questioner.db)
con = sqlite3.connect('questioner.db')
cur = con.cursor()

# Frames Controller
class MainFunc(Tk):
    def __init__(self, *args, **kwargs):
        Tk.__init__(self, *args, **kwargs)

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

        container.grid_rowconfigure(0, weight=1)
        container.grid_columnconfigure(0, weight=1)

        self.frames = {}

        for F in (Questionnaire, PageOne, PageTwo):

            frame = F(container, self)
            self.frames[F] = frame
            frame.grid(row=0, column=0, sticky="nsew")

        self.show_frame(Questionnaire)

    def show_frame(self, cont):

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


class Questionnaire:
    def __init__(self, master, controller):

        # Main Frame
        header = Frame(master)
        header.grid(row=0, sticky='news',pady = 50, padx = 25)

        content = Frame(master)
        content.grid(row=1, sticky='N', pady = 50, padx = 25)

        footer = Frame(master)
        footer.grid(row=2, sticky='news', pady = 50, padx = 25)

        root.columnconfigure(0, weight=1) # 100% 

        root.rowconfigure(0, weight=2) # 10%
        root.rowconfigure(1, weight=7) # 80%
        root.rowconfigure(2, weight=1) # 10%


        # Student Name
        self.lbl_studetname = Label(header, text = 'Student Name: ')
        self.lbl_studetname.grid(row = 0, column = 1, sticky = W)

        self.entStudentname = Entry(header, width = 20)
        self.entStudentname.grid(row = 0, column = 2, sticky = W)

        # Student Surname
        self.lbl_studetsurname = Label(header, text = 'Student Surname: ')
        self.lbl_studetsurname.grid(row = 0, column = 3, padx = (20,0), sticky = W)

        self.entStudentsurname = Entry(header, width = 20)
        self.entStudentsurname.grid(row = 0, column = 4, sticky = W)

        # Student ID Card
        self.lbl_studetId = Label(header, text = 'Student ID card: ')
        self.lbl_studetId.grid(row = 0, column = 5, padx = (20,0), sticky = W)

        self.entStudentId = Entry(header, width = 20)
        self.entStudentId.grid(row = 0, column = 6, sticky = W)

        # Quistioner Guide
        self.lbl_guide = Label(content, text = 'Please read the questions carefully, you have 45 minutes to finish the quiz. \n Any questions regarding the quiz please raise your hand and do not disturb your colleagues!')
        self.lbl_guide.grid(row = 1, column = 2, columnspan = 4)

        # Start Button
        self.startButton = Button(content, text = 'START', padx = 20, command=lambda: controller.show_frame(PageOne))
        self.startButton.grid(row = 3, column = 4, pady = 50, sticky = W)


        # Statistic
        self.lbl_studentCounter = Label(footer, text = 'Taken:')
        self.lbl_studentCounter.grid(row = 0, column = 0, padx = 5)

        self.lbl_avgscore = Label(footer, text = 'Average Score:')
        self.lbl_avgscore.grid(row = 0, column = 1, padx = 5)

        self.lbl_lowestScore = Label(footer, text = 'Lowest Score:')
        self.lbl_lowestScore.grid(row = 0, column = 2, padx = 5)

        self.lbl_highestScore = Label(footer, text = 'Highest Score:')
        self.lbl_highestScore.grid(row = 0, column = 3, padx = 5)

# Page One
class PageOne(Frame):
    def __init__(self, parent, controller):
        Frame.__init__(self, parent)
        self.controller = controller

        label = Label(self, text="This is page 1")
        label.pack(side="top", fill="x", pady=10)

        button = Button(self, text="Next Page", command = lambda : controller.show_frame("PageTwo"))
        button.pack()

# Page Two
class PageTwo(Frame):
    def __init__(self, parent, controller):
        Frame.__init__(self, parent)

        self.controller = controller
        label = Label(self, text="This is page 2")
        label.pack(side="top", fill="x", pady=10)

        button = Button(self, text="Next Page", command = lambda : controller.show_frame("StartPage"))
        button.pack()       



root = Tk()
app = MainFunc(Tk)
root.title('Qustioner Quiz')
root.geometry("800x600+600+200")
root.iconbitmap('icon.ico')
root.resizable(False, False)
root.mainloop()