将窗口定义为类，但无法调用mainloop函数

Question

I am so trash at coding that I have no idea how to utilise classes to make cool stuff :( --- I'm really new to GUI development, and I'm trying to make a simple maze game with a level selector. I have the maze program squared away, but I am somehow hopeless at Tkinter apparently, since I've been trying constantly for the last hour to find a solution online. As you might have noticed, this is my first post here.

I'm running this in PyCharm, using my decent computer on Windows 10. I'm especially trash at this IDE since I, for some reason, cannot install any libraries/ use any libraries that I see clearly installed in my list of libraries... but that's for another post. As I've mentioned, I've been trying to figure out a simple program for the past hour, but nothing seems to be working.

Nothing I find online is particularly useful, either, and the ones that might be are so hopelessly complex that I cannot understand what they are trying to achieve. I'm looking for a simple solution to a simple problem, and hopefully, this great community can help me out.

import tkinter as tk


class Window():
    def __init__(self):
        self = tk.Tk()
        self.geometry("%dx%d+0+0" % (1920,1080))


root = Window()

root.mainloop()

Expected: Window appears Observed: Program abruptly ends

Error:
Traceback (most recent call last):
  File "C:/Users/(GD) ShadowPlague/PycharmProjects/GameDesign/Main.py", line 12, in <module>
    root.mainloop()
AttributeError: 'Window' object has no attribute 'mainloop'

Answer 1

You create class in wrong way. You can't assign Tk() to self to create correctly class. External root will have nothing to do with internal self . First you create instance Window() and assign to variable root but later you create instance Tk() and assign to self but it will not change instance assigned to root .

---

First method: create Tk() inside class as self.root and then you use win.root

import tkinter as tk

class Window():

    def __init__(self):
        self.root = tk.Tk()
        self.root.geometry("%dx%d+0+0" % (1920,1080))

win = Window()

win.root.mainloop()

Second method: inherit from Tk() . It needs Window(tk.Tk) and super().__init__

import tkinter as tk

class Window(tk.Tk):

    def __init__(self):
        super().__init__()
        self.geometry("%dx%d+0+0" % (1920,1080))

root = Window()

root.mainloop()