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Re: Keypress Input

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On 06/03/2015 11:22 AM, John McKenzie wrote:
>   Hello.
>
>   Very new to Python and looking for some basic help.
>
>   Would like a set-up where something happens when a key is pressed. Not
> propose a question, have the user type something, then hit return, then
> something happens, but just the R key is pressed, something happens, then
> something else happens if the B key is pressed, then a third thing
> happens if the G key is pressed.
>
>   My research only served to confuse me. Firstly, I do not understand how
> it is possible for this to be a difficult thing not built into the system
> for any scripting language made within the last few decades. More to the
> point I am unclear on specific suggestions. Most of them seem to be for
> Windows only and I want this working on a Raspberry Pi. Saw getch but I
> am still confused if it is platform specific or not, or requires a module
> to be installed or not. Just get errors if I try to install getch using
> PIP.

If you are using Python through a CLI (command line interface i.e., a 
shell), then in fact your request doesn't really make sense.  CLIs by 
their nature don't support that kind of interaction.

BUT don't despair.  Nearly every GIU framework on the planet has a 
Python interface, and they all allow for a window to be opened with 
event processing of your choice.

This are some good places to start:
     https://wiki.python.org/moin/GuiProgramming
     https://wiki.python.org/moin/GUI%20Programming%20in%20Python

Several of these (Tkinter and the curses module) are distributed with 
Python, so you should already have them installed.

Gary Herron



>
>   Other suggestions seemed to be overkill and confused me to due to my
> beginner level knowledge and the fact these suggestions have other, more
> complicated elements to them.
>
>   I just want a button press on a device connected to a Raspberry Pi to
> trigger an action. If anyone can give me some guidance on this I would
> appreciate it.
>
>   Thank you.
>


-- 
Dr. Gary Herron
Department of Computer Science
DigiPen Institute of Technology
(425) 895-4418

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Keypress Input John McKenzie <davros@bellaliant.net> - 2015-06-03 18:22 +0000
  Re: Keypress Input Laura Creighton <lac@openend.se> - 2015-06-03 20:59 +0200
  Re: Keypress Input Gary Herron <gherron@digipen.edu> - 2015-06-03 12:15 -0700
  Re: Keypress Input Gary Herron <gherron@digipen.edu> - 2015-06-03 11:47 -0700
  Re: Keypress Input Laura Creighton <lac@openend.se> - 2015-06-04 12:50 +0200
  Re: Keypress Input John McKenzie <davros@bellaliant.net> - 2015-06-06 18:28 +0000
    Re: Keypress Input Laura Creighton <lac@openend.se> - 2015-06-06 22:52 +0200
    Re: Keypress Input Chris Angelico <rosuav@gmail.com> - 2015-06-07 07:20 +1000
    Re: Keypress Input Michael Torrie <torriem@gmail.com> - 2015-06-06 22:31 -0600
  Re: Keypress Input John McKenzie <davros@bellaliant.net> - 2015-06-15 05:15 +0000
    Re: Keypress Input John McKenzie <davros@bellaliant.net> - 2015-06-16 15:09 +0000
    Re: Keypress Input Christian Gollwitzer <auriocus@gmx.de> - 2015-06-19 07:20 +0200
      Re: Keypress Input John McKenzie <davros@bellaliant.net> - 2015-06-20 14:59 +0000
      Re: Keypress Input Rick Johnson <rantingrickjohnson@gmail.com> - 2015-07-15 18:03 -0700
        Re: Keypress Input Michael Torrie <torriem@gmail.com> - 2015-07-15 22:30 -0600
          Re: Keypress Input Rick Johnson <rantingrickjohnson@gmail.com> - 2015-07-16 10:22 -0700
            Re: Keypress Input Michael Torrie <torriem@gmail.com> - 2015-07-16 15:27 -0600
        Re: Keypress Input Terry Reedy <tjreedy@udel.edu> - 2015-07-16 02:08 -0400
          Re: Keypress Input Rick Johnson <rantingrickjohnson@gmail.com> - 2015-07-16 11:30 -0700
        Re: Keypress Input Terry Reedy <tjreedy@udel.edu> - 2015-07-16 03:10 -0400
        Re: Keypress Input Michael Torrie <torriem@gmail.com> - 2015-07-16 15:29 -0600
  Re: Keypress Input John McKenzie <davros@bellaliant.net> - 2015-06-15 05:23 +0000
    Re: Keypress Input Oscar Benjamin <oscar.j.benjamin@gmail.com> - 2015-06-15 12:22 +0100
      Re: Keypress Input Grant Edwards <invalid@invalid.invalid> - 2015-06-15 15:22 +0000
    Re: Keypress Input Michael Torrie <torriem@gmail.com> - 2015-06-16 11:15 -0600
      Re: Keypress Input John McKenzie <davros@bellaliant.net> - 2015-06-16 20:06 +0000
        Re: Keypress Input Grant Edwards <invalid@invalid.invalid> - 2015-06-16 20:49 +0000
          Re: Keypress Input Michael Torrie <torriem@gmail.com> - 2015-06-16 19:22 -0600
          Re: Keypress Input Michael Torrie <torriem@gmail.com> - 2015-06-18 16:42 -0600
      Re: Keypress Input John McKenzie <davros@bellaliant.net> - 2015-06-20 15:02 +0000
        Re: Keypress Input Michael Torrie <torriem@gmail.com> - 2015-06-20 10:30 -0600
  Re: Keypress Input Paul Rubin <no.email@nospam.invalid> - 2015-06-16 14:22 -0700
  Re: Keypress Input John McKenzie <davros@bellaliant.net> - 2015-07-15 19:05 +0000
    Re: Keypress Input Michael Torrie <torriem@gmail.com> - 2015-07-15 13:17 -0600
      Re: Keypress Input John McKenzie <davros@bellaliant.net> - 2015-08-16 19:45 +0000

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