Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!eu.feeder.erje.net!newsfeed.xs4all.nl!newsfeed4a.news.xs4all.nl!xs4all!newsgate.cistron.nl!newsgate.news.xs4all.nl!post.news.xs4all.nl!not-for-mail Return-Path: X-Original-To: python-list@python.org Delivered-To: python-list@mail.python.org X-Spam-Status: OK 0.000 X-Spam-Evidence: '*H*': 1.00; '*S*': 0.00; 'python.': 0.02; 'python,': 0.02; 'programmer': 0.03; 'omit': 0.09; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'python': 0.11; 'systems.': 0.12; '"hello': 0.16; 'command:': 0.16; 'editor,': 0.16; 'program?': 0.16; 'received:80.91.229.3': 0.16; 'received:dip0.t-ipconnect.de': 0.16; 'received:plane.gmane.org': 0.16; 'received:t-ipconnect.de': 0.16; 'reload': 0.16; 'wrote:': 0.18; 'variable': 0.18; 'acquired': 0.19; 'written,': 0.19; 'written': 0.21; '(the': 0.22; 'command': 0.22; 'print': 0.22; 'header:User-Agent:1': 0.23; 'script.': 0.24; 'environment': 0.24; "i've": 0.25; 'script': 0.25; 'shown': 0.26; 'header:X-Complaints-To:1': 0.27; 'thus': 0.29; "doesn't": 0.30; 'invoke': 0.31; 'probably': 0.32; 'run': 0.32; 'text': 0.33; 'linux': 0.33; 'skip:# 10': 0.33; 'something': 0.35; 'editor': 0.35; 'but': 0.35; 'controls': 0.36; 'shows': 0.36; 'should': 0.36; 'two': 0.37; 'list': 0.37; 'system,': 0.38; 'to:addr:python-list': 0.38; 'skip:. 10': 0.39; 'to:addr:python.org': 0.39; 'received:org': 0.40; 'called': 0.40; 'how': 0.40; 'simple': 0.61; 'first': 0.61; 'back': 0.62; 'save': 0.62; 'world': 0.66; 'due': 0.66; 'between': 0.67; 'frank': 0.68; 'ont': 0.84 X-Injected-Via-Gmane: http://gmane.org/ To: python-list@python.org From: Peter Otten <__peter__@web.de> Subject: Re: newbee Date: Wed, 13 Aug 2014 11:57:51 +0200 Organization: None References: Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7Bit X-Gmane-NNTP-Posting-Host: p57bdb2d6.dip0.t-ipconnect.de User-Agent: KNode/4.13.2 X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: General discussion list for the Python programming language List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Newsgroups: comp.lang.python Message-ID: Lines: 47 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1407923891 news.xs4all.nl 2868 [2001:888:2000:d::a6]:33636 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:76182 Frank Scafidi wrote: > I just acquired a Raspberry Pi and want to program in Python. I was a PL/1 > programmer back in the 60's & 70's and Python is similar. I am struggling > with some very fundamental things that I am not finding in the > documentation. Can someone help me with the basics like how do I save a > program I've written, reload it in Python, list the program once it's > loaded? How do I edit a program? Are these command line functions? You can use any text editor to write a python script. A simple editor which might be present ont the Pi is called "nano". It shows the hotkeys to store the text and quit the editor, and thus should be self-explanatory: $ nano helloworld.py Once you have written your simple script you can look at it with the "cat" command: $ cat helloworld.py #!/usr/bin/env python print "Hello world" Invoke it with: $ python helloworld.py Hello world You can also make your script "executable" which means that the first line controls which program is used to run it: $ chmod +x helloworld.py $ ./helloworld.py Hello world $ If the script is in a directory listed in the PATH environment variable you can omit the path (the "./" in the above example): $ mv helloworld.py ~/bin $ helloworld.py Hello world PS: I ran the above demo on a Linux system, but not on the Raspberry Pi, so if something doesn't work as shown above it's probably due to the difference between the two systems.