Why doesn't Python include non-blocking keyboard input function?

[BartC]

On 27/10/2016 11:07, Terry Reedy wrote:
> On 10/26/2016 9:12 PM, BartC wrote:
>> On 27/10/2016 00:30, Terry Reedy wrote:

>> So how does your tkinter example work in such a server?
>
> Without X-windows available, there would be no point, and it will not
> work.  I presume including the X window subsystem on a linux (server)
> build is optional.

> Compiling _tkinter.c is optional and many (most?) Linux distributions
> put tkinter.py, idlelib/*.py, and turtle.py in a separate package.

I tried your example. It sort of worked but was a bit temperamental when 
pressing Rshift.

But I also tried it in a virtual Ubuntu which said that tkinter was not 
installed.

And I tried it on Debian on a raspberry pi without X-windows running, 
and there it also failed even though it didn't use a window.

So even with a supposedly standard library such as tkinter, relying on 
it can give problems. (Apart from to switch between between Tkinter and 
tkinter depending on Python version.)

-- 
Bartc