Tkinter Listbox — Python Technical Interview Questions & Answers

Tkinter Listbox

Tkinter Listbox

  • Tkinter Listbox belongs to Tkinter desktop UI. Create Tk(), add this widget, pack or grid it, then mainloop() — without mainloop the window never appears.
  • Tkinter Listbox — output: Tk() then Listbox(text='Hello Asha') then pack → mainloop. Run real Tkinter on your laptop to open the window.
  • Trap for Tkinter Listbox: writing command=fn() with brackets. That calls the function immediately. Pass the function name: command=fn.

Technical Interview Tip: Widget job + pack + mainloop. One sentence each.

Code Examples for Tkinter Listbox

Example

# Tkinter Listbox
print("Tk()")
print("Listbox(text='Hello Asha')")
print("pack() → mainloop()")

Tkinter Listbox — output: Tk() then Listbox(text='Hello Asha') then pack → mainloop. Run real Tkinter on your laptop to open the window.

How to Explain Tkinter Listbox to an Interviewer

Explain Tkinter Listbox as if you are teaching a junior — definition, then one tiny script.

Tkinter Listbox is part of Tkinter desktop UI. Tkinter Listbox — Tk() → widget → pack/grid → mainloop().

What does the example print, and why?

Tkinter Listbox — output: Tk() then Listbox(text='Hello Asha') then pack → mainloop

What mistake do freshers make with Tkinter Listbox?

Tkinter Listbox command is a function name, not a call with ().