7. Call Function Using A Button In Tkinter (Python)

This video is about calling a function when the button is clicked in Tkinter. The video is a part of the series of "Developing GUI using Tkinter - Python"

For the full version of the code, do visit our Github page :

Feel free to comment and ask questions.
Thank you.

[adityapatel]

Great work brother!

By the way, at 2:29 when you say "it is going to do some unwanted actions", it is because when you say command=func, a reference is passed to the callable rather than executing the function itself. The callable can then decide what to do with the reference. But when you do command=func(), the function gets executed and returns the result to the callable. The key difference here is "returning of the result" which does not happen when you call the function without ().

Hope this makes sense.

[petrucotorobai]

Thank you !!! I spent half a day trying to understand why my button call-back is not working, it turns out it didn't work just because i used the parentheses as you would normally do when you call a function.

[ghizlanehamdan]

how a button can run this function evrytime since the first click how it will run it always till i click on it again
please answer i need your help
thank you sooo much

[mawsonek]

Thanks mate, what if I don't want the function to print in the terminal but in a textbox of some sort?

[godvisiongaming]

Sir there is any command to directly run different file in project(working on openCV want GUi)

[sakshimishra]

What if I want to print "button is clicked" in a textbox and not in the terminal?
Please help

[kelvinjayadigue]

button to add image from my pc drive
how to do it