What Does the \'Weight\' Option in Tkinter Grid Control?

Understanding the 'Weight' Option in Tkinter Grid

Tkinter's grid management system provides the 'weight' option for columns and rows, enabling control over their growth when there is excess space in the window. By default, the weight is set to zero, indicating no expansion.

Consider the 'weight' option in the following context:

Weight in a Simple Demo

To illustrate the effect of weight, let's examine a code snippet that creates a window with multiple frames. Without weights applied, the frames will not expand to fill the extra space within the window:

<code class="python">root = tk.Tk()
root.geometry("200x100")

f1 = tk.Frame(root, width=10, height=100)
f2 = tk.Frame(root, width=10, height=100)

f1.grid(row=0, column=0, sticky="nsew")
f2.grid(row=0, column=1, sticky="nsew")

root.grid_columnconfigure(0, weight=0)
root.grid_columnconfigure(1, weight=0)

root.mainloop()</code>

In this example, the extra space in the window is not utilized, resulting in the frames appearing left-aligned.

Using Weight to Control Expansion

Now, let's assign a weight of 1 to the first column:

<code class="python">root.grid_columnconfigure(0, weight=1)</code>

Rerunning the program will demonstrate that the frame in the first column expands to fill the extra space, while the second frame remains fixed. This is because weight affects how excess space is distributed among columns or rows.

Weight Proportions

If multiple columns or rows have weights, the extra space is divided proportionally to their weights. For instance, if we set the weight of the first column to 1 and the second column to 3, the extra space will be distributed with a ratio of 1:3, ensuring a consistent alignment as the window is resized.

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