On 05/24/2017 04:10 PM, Juan C. wrote: > I have some Python 3.6.0 scripts that my co-workers use for some small > and medium tasks. Whenever I have time I fix some bugs and add some > features to said scripts to make their lives (and mine :D) easier, but > there's a problem: I need to send a new script via email/chat/whatever > and they have to replace it wherever they use it, such a hassle. > > How would I go to put a "update module" inside my script? I was > thinking about using Git, because those scripts are already in > personal repositories so that I can keep track of changes. Will I have > to setup any special permissions so that the scripts can pull requests > from my private repositories? > > I was thinking of something like "check for update before start", if > an update is found the script would replace itself with the newer > version and restart, is that possible? For example, 'cool-tool.py' > v0.2 starts and find that version v0.3 is out, so it downloads and > replace 'cool-tool.py' code with newer code and restart as v0.3.
Yes, this is definitely a problem others have built solutions for. It differs a bit depending on whether the script to potentially be updated is a long-running one or one that can afford to "check on startup", but not actually that much. You can use os.execv to restart a script, there are several permutations but they look something like (pick the bits you need, might not need all of it) args = sys.argv[:] args.insert(0, sys.executable) os.chdir(foo) # foo being a saved copy of the directory you start in, in case the program changes directories while running os.execv(sys.executable, args) that's the easy part, though. self-updating software is tricky... much easier if you're just talking about a single file, but then what if updating fails, of if the update itself is broken? Then the user is left with a non-working setup; you'll have to make sure there's a way to get back to working that they can figure out how to operate. For a single file you could put on github, or a local server of course, and on update check download the file (requests module, perhaps), decide if that's a new version, if so replace self and restart. If that's too expensive you can put in a timer - if it's been a week since the last update (for example), do the download-and-check. If neither of those work, you'll have to build an API that can query versions... that's more work for you, but maybe worth it. I think there's an update checker program somewhere on PyPi, but maybe it only works for things located on PyPi? _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
