from tkinter import *
from tkinter import filedialog


#Functions
def start_game():

    screen = Tk()
    title  = screen.title('Math Duel')
    canvas = Canvas(screen, width=500, height=500)
    canvas.pack()

    #image logo
    logo_img = PhotoImage(file='methbettle.png')
    #resize
    logo_img = logo_img.subsample(2, 2)
    canvas.create_image(250, 150, image=logo_img)


    #Select Path for saving the file
    path_label = Label(screen, text="Single/Multiplayer", font=('Arial', 15))
    select_btn =  Button(screen, text="Launch", bg='red', padx='22', pady='5',font=('Arial', 15))
    #Add to window
    canvas.create_window(250, 280, window=path_label)
    canvas.create_window(250, 330, window=start_game)

# Button to present more





    screen.mainloop()

CodePudding user response：

The main problem here is simply that you aren't calling your start_game function.

You need to put this at the left margin of the file, after all of the other code:

start_game()

A more common method is to hide this inside a conditional statement that allows you to run the file directly or import it into a file (see What does if __name__ == "__main__": do?):

if __name__ == '__main__':
    start_game()

Note: your code has a bug that will be exposed when you do this. You also need to change window=start_game to window=select_btn.

CodePudding user response：

I think the issue is that you aren't actually starting the application

from tkinter import *
from tkinter import filedialog


# instantiate tk outside of the function
class Screen(Tk):
    def __init__(self):
        super().__init__()  # initialize Tk
        self.title('Math Duel')
        self.start_game()

    def start_game(self):
        self.canvas = Canvas(self, width=500, height=500)
        self.canvas.pack()

        #image logo
        self.logo_img = PhotoImage(file='methbettle.png')
        #resize
        self.logo_img = logo_img.subsample(2, 2)
        self.canvas.create_image(250, 150, image=self.logo_img)

        #Select Path for saving the file
        self.path_label = Label(self, text="Single/Multiplayer", font=('Arial', 15))
        self.select_btn =  Button(self, text="Launch", bg='red', padx='22', pady='5', font=('Arial', 15))
        #Add to window
        self.canvas.create_window(250, 280, window=path_label)
        self.canvas.create_window(250, 330, window=start_game)



if __name__ == '__main__':
    app = Screen()  # instantiate your Screen class
    app.mainloop()  # run the app