我该如何修复 AttributeError: 'Tk' object has no attribute 'open'

Question

I'm trying to make a button that opens another python file

import os
import tkinter as tk
from tkinter import ttk
# root window
root = tk.Tk()
root.geometry('300x200')
root.resizable(False, False)
root.title('juststop')
os.startfile(r'C:\Users\75259\PycharmProjects\pythonProject9\main.py')
open_button = ttk.Button(
    root,
text='calculater',
)
open_button.pack(
    ipadx=5,
    ipady=5,
    expand=True
)
root.mainloop()

I have tried a multitude of things but non seem to work

Answer 1

The way you have your os.startfile implemented calls the function right away. One way to solve this is to create a function to use it when called and link it to your button. Below is a modification of your example that will only open the file when you press the calculater button.

import os
import tkinter as tk
from tkinter import ttk

# root window
root = tk.Tk()

root.geometry('300x200')
root.resizable(False, False)
root.title('juststop')


def open_file():
    os.startfile(r'C:\Users\75259\PycharmProjects\pythonProject9\main.py')
    

open_button = ttk.Button(root, text='calculater', command=open_file)
open_button.pack(ipadx=5, ipady=5, expand=True)


root.mainloop()