Python · GUIs with tkinter

What does this print? ``` v = tkinter.IntVar() v.set("not a number") print("set ok") print(v.get()) ```

Answer locked. Get the free KnowCard app to reveal it — plus spaced-repetition review so it actually sticks.

This is one card from the KnowCard library — thousands more across SAP, Linux, Python and more. In the app you get the answer, AI explanations, and cards that come back right before you would forget them. Free to start on iOS, Android or the web.

More in GUIs with tkinter

Which GUI toolkit can you import and use without installing anything beyond a standard CPython install?

You build a full tkinter window — root, labels, buttons — and run the script. Nothing appears and the program exits instantly. What's missing?

What is wrong with this button? ``` def greet(): print("hi") b = tkinter.Button( root, text="Go", command=greet()) ```

In one tkinter container you call .pack() on one widget and .grid() on another. What happens?

You create a tkinter.Label(root, text="Hi") but never call .pack(), .grid(), or .place() on it. Does it show?

Name tkinter's three geometry managers and the one-line rule for choosing between them.

Start learning today

Free to start — download the app or use it in your browser.