fromtkinterimportTkfromtkinter.ttkimportButtonw=Tk()w.geometry('200x150')btn=Button(w,text='Geeks')btn.pack(pady=5)w.mainloop()

Output: 

After running the application, you'll see that the size of the Tkinter window has changed, but the position on the screen is the same. 

Explanation:

• 200x150sets the window width to 200px and height to 150px.
• The position stays default (top-left corner).
• Window now has a fixed size regardless of widgets inside.

Example 2: Set Size and Position Together

We can also set both size and on-screen position using offsets.

fromtkinterimportTkfromtkinter.ttkimportButtonw=Tk()w.geometry('200x150+400+300')btn=Button(w,text='Geeks')btn.pack(pady=5)w.mainloop()

Output: 

When you run the application, you'll observe that the position and size both are changed. Now the Tkinter window is appearing at a different position (400 shifted on X-axis and 300 shifted on Y-axis).

Explanation:

• 200x150: window size (width × height)
• +400+300: 400px from left, 300px from top of the screen
• The window now opens at a different position with a fixed size

Tkinter Window Without Using geometry() 

By default, the window appears in the top-left (northwest) corner with an automatic size.

fromtkinterimportTkfromtkinter.ttkimportButtonw=Tk()btn=Button(w,text='Geeks')btn.pack(pady=5)w.mainloop()

Output: 

As soon as we run the application, we'll see the position of the Tkinter window is at the northwest position of the screen and the size of the window is also small as shown in the output below. 

Explanation:

• No size or position is set manually.
• The window appears in the default top-left screen corner.
• Window size adjusts automatically based on widget size.

Note: We can also pass a variable argument in the geometry method, but it should be in the form(variable1) x (variable2); otherwise, it will raise an error.