keyboard listener

[DPaul]

Hi,

I am looking for a module that will do the simplest of things:
An app starts, and it waits for the user to enter 1 keyboard key (=validated if need be).
The app registers it, does something, and then waits for the next 1 key.(GUI = Tkinter)

I pip installed keyboard and encountered some issues for which i wrote a workaround.
It works, but not to my satisfaction.

The question:
Before i start experimenting with other modules, what would anyone recommend as being the obvious choice,
for doing this.

thx,
Paul

[Larz60+]

You're looking for a keyboard listener.
there are several here: https://pypi.org/search/?q=keyboard
This one looks promising (but haven't tried): https://pypi.org/project/keyboard-listener/

[DPaul]

OK, thanks , I'll look into those.
This combined with "switch case" statement would be the ultimate.
I seem to have read that it's about to happen.

Paul

[Larz60+]

If you mean this article: https://towardsdatascience.com/switch-ca...caf7b2bfd3
I also read that, but it doesn't make sense as version 3.9.3 is current version and the next major release will be 4.0 no mention that I have found of a case statement, other than the only official information of PEP 3101 (from 2006) https://www.python.org/dev/peps/pep-3103/ which was rejected. Article states that the case statement will appear in release 3.1.0 ...

A dictionary whose keys are the 'keyboard keypress', and whose value is a function pointer to be executed when the key is pressed would be a much more efficient and easier to program solution.

[DPaul]

The article seems to be talking about release 3.10...
But i do not have inside info...

Anyway we had a lengthy thread here a couple of months ago,
about using dictionaries instead of switch case, which is quite OK.

I made the point then that "Select or swith Case" statements where already
commonplace decades ago elsewhere. In a lot of cases a dictionary will do the trick though.

Paul

[Larz60+]

I am an old C (Bell labs, early 1980's) and C++ and used switch case often.
Python dictionary is much more robust IMHO.
I'm an old timer, first official programming job was in 1968.
Slowing down, but still at it.