[SOLVED] A question to tkinter python

Question

See actually I was trying to created a calculator with tkinter . My personal logic
1). I created 25 buttons
2). Each button which can be used in evel function ie. 1234567890+/*- is commnded with cal function. Means whenever any of these button is pressed cal function is called with a parameter of itself value as a string
3). This function append the value in a list every time it is called
4). The appended list is joined and shows to a screen .

This is all what i wamt to did till now . But problem is that when the problem executes first time then automatically 11 times function runs each time for every buttons. And it print the content over label .. I dont need that actually. In my view it seems all right . See the code and run the code for better understanding .

Have a look to code \/
https://code.sololearn.com/c84jeOHL0kL5/?ref=app

[ SOLVED ! ]

Answer 1

This is because you're calling the functions when setting your command=func
You just want the identifier without the parentheses. For the functions that you need to pass the arguments you can just use a lambda and call the function in the lambda with the arguments.
Here is an example of each of the above.

Button(root, command=ac, bg=o, text="AC", height=3, width=5).place(x=370, y=300)

Button(root, command=lambda: cal("%"), bg=sb, text="%", height=3, width=5).place(x=550, y=300)

Apply this principle to the rest of your buttons and retest.

More info;
https://www.delftstack.com/howto/JUMP_LINK__&&__python__&&__JUMP_LINK-tkinter/how-to-pass-arguments-to-tkinter-button-command/

Answer 2

Yup, that's correct. That link has some other work arounds for simple ways to set the function and pass arguments etc.

Answer 3

Thanks ChaoticDawg I totally forgotten about it. That we can't pass a function with parenthesis directly over a command. Because it will call the function in that way .

Thanku so much bro . 🤗🤗🤗🤗