TKinter Button instantiation with list comprehension-CodePudding

I'm creating a GUI in tkinter, and am trying to use list comprehension for the creation of buttons. However, I struggle getting the list comprehension to actually replace 'btn' with the names in 'btn_list'. I'd appreciate if anyone knew of a clever way of doing this.

start_btn, pause_btn, reset_btn, stat_btn = (Button(),) * 4
btn_list = [start_btn, pause_btn, reset_btn, stat_btn]

[btn.grid(row=2, column=col) for col, btn in enumerate(btn_list)]

CodePudding user response：

When you do (Button(),) * 4, you get a tuple containing 4 times the same button. If you want 4 different buttons, you can do it with a list comprehension:

btn_list = [Button() for i in range(4)]

I do not see the point of using a list comprehension instead of a regular for loop to grid them though because it gives you a useless list of None.

CodePudding user response：

If you create the button in a class instead, and add initiate the class for each item in the list comprehension, that should work.

import tkinter as tk


class CreateButton:
    """Create button class"""
    def __init__(self, **kwargs):
        self.button = tk.Button(**kwargs)


window = tk.Tk()
button_text = ["Test1", "Test2"]
buttons = [CreateButton(master=window, text=text, width=20) for text in button_text]
for button in buttons:
    button.button.pack()

window.mainloop()