Add math calculator to GUI

For what do you need the calculator?
For setting offsets there is a widget where you can use simple math terms.

I used eval function, it works grate.
Firstly I used BigJohnT solvement. But I saw there a little bit problems, if to write 45/2*3, it will count only first two elements.
Then I started to write code that if I write second time operational char, it make counting of previous.
But I didn't finished it, it somehow worked only for one part of it, as I wrote previusly in my post. I'm not experianced in python, and it tab/spaces logic separation irritates me. I sudied C++ and there is { everythin here } syntax I think very nice. So, pissibly python thought that in the line is and of page and my logic, I don't know.
Then "eval()" solved this problem with easiness.

I use this function only for counting in simple calc to not to count in head, very comfortable, I think.
I almost finished cnc machine for retrofit with MESA and QTpyvcp. When I'll make video, I'll show it at "Show your stuff".

aleksamc wrote:

I used eval function, it works grate.
Firstly I used BigJohnT solvement. But I saw there a little bit problems, if to write 45/2*3, it will count only first two elements.
Then I started to write code that if I write second time operational char, it make counting of previous.
But I didn't finished it, it somehow worked only for one part of it, as I wrote previusly in my post. I'm not experianced in python, and it tab/spaces logic separation irritates me. I sudied C++ and there is { everythin here } syntax I think very nice. So, pissibly python thought that in the line is and of page and my logic, I don't know.
Then "eval()" solved this problem with easiness.

I use this function only for counting in simple calc to not to count in head, very comfortable, I think.
I almost finished cnc machine for retrofit with MESA and QTpyvcp. When I'll make video, I'll show it at "Show your stuff".

Great it works for you. I'm not so good with Python either. With Python, I always assume the feature I need already exists, so I do a bit of Googling and usually it does. eval was no exception. Years ago I had code for a recursive calculator in C which was neat. I wish I still had it.