TKInter-标签中的文本更改窗口的宽度

Question

I'm building a calculator in python, using the tkinter toolkit. The problem is that when the text is typed in the calculator (and added to the label that shoes the calculation) the whole width of the window changes and becomes longer. What can I do in order to solve it?

Here is some important parts of the code: (the main class inherits from tk.Frame)

labelStyle = {"padx":10, "pady":10, "justify":"left"}
calculationsLabel = tk.Label(self, text="", **labelStyle)
calculationsLabel.grid(row=0, column=1, **gridStyle)
self.master.resizable(0,0)
self.pack(padx=5, pady=5)
self.calculationsLabel=calculationsLabel

for number in range(9,0,-1):
        ...
        tk.Button(self, ...).grid(...)

The images that illustrates the problem:

Answer 1

You need to do a couple of things to prevent the label from changing the window size:

1. Give the label a width of 1 (one). By not giving the label a width you are implicitly saying "grow bigger when the text is bigger". By giving it an explicit width you are saying "no matter how big the text is, don't grow if the text is bigger".
2. use the columnspan option to grid, to get the cell that the label is in to span the width of your grid of buttons. Use the sticky option, so that even though the label requests only one character of width, grid will force it to grow wide enough to fit the space.

Answer 2

You can use the columnspan argument to let the label stretch over top all of your columns, instead of stretching out the first one. Add to your grid method:

calculationsLabel.grid(row=0, column=1, columnspan=7 **gridStyle)

(replacing 7 with however many columns you actually have)

Answer 3

You could use the columnspan option of grid to make the label span the complete width of the calculator.
Then, if you want the number to be on the left use anchor=W in the Label .

This way the window only expands when the Label is longer than the complete window. And you can even prevent that by using the Label 's width option.