Writing a calculator code with Tkinter

Question

Hello everybody! I am planning to write a calculator code with Tkinter module. I know how to define functions and plan the mainscreen with active buttons. But how can I write the decimal numbers?
I mean when I press “2”, program will add “2” to the mainscreen but when I press to a second number, for example “3” it must be “20+3”. If I could manage it I think I can write the functions for calculations.
I hope I told my problem exactly. Have a good weekend and take care?

Answer 1

https://www.sololearn.com/discuss/333866/?ref=app
https://www.sololearn.com/discuss/1316935/?ref=app

Answer 2

Hello, your question isn't too clear. What's the problem with that?