How can the sizing of a tkinter frame be prevented from adjusting to the content within it?

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You can use the pack_propagate() and grid_propagate() methods to prevent a Tkinter frame from adjusting its size to its content.

To prevent a frame from adjusting to the content when using the pack() method:

import tkinter as tk

root = tk.Tk()

frame = tk.Frame(root)
frame.pack(fill=tk.BOTH, expand=True)

label = tk.Label(frame, text="Hello, World!")
label.pack()

frame.pack_propagate(0)  # Prevent frame from adjusting to content

root.mainloop()

To prevent a frame from adjusting to the content when using the grid() method:

import tkinter as tk

root = tk.Tk()

frame = tk.Frame(root)
frame.grid(row=0, column=0, sticky="nsew")

label = tk.Label(frame, text="Hello, World!")
label.grid(row=0, column=0)

frame.grid_propagate(0)  # Prevent frame from adjusting to content

root.mainloop()

In both examples, the pack_propagate(0) and grid_propagate(0) methods prevent the frame from adjusting its size to its content.