Path: csiph.com!usenet.pasdenom.info!news.redatomik.org!newsfeed.xs4all.nl!newsfeed2.news.xs4all.nl!xs4all!post.news.xs4all.nl!not-for-mail
Date: Wed, 03 Jun 2015 12:15:32 -0700
From: Gary Herron <gherron@digipen.edu>
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0
MIME-Version: 1.0
To: python-list@python.org
Subject: Re: Keypress Input
References: <rBHbx.75089$MO7.40532@fx10.iad>
In-Reply-To: <rBHbx.75089$MO7.40532@fx10.iad>
Content-Type: text/plain; charset=windows-1252; format=flowed
Content-Transfer-Encoding: 7bit
Precedence: list
Newsgroups: comp.lang.python
Message-ID: <mailman.123.1433359762.13271.python-list@python.org>
Lines: 58
NNTP-Posting-Host: 2001:888:2000:d::a6
Xref: csiph.com comp.lang.python:91987

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