Indeed, we have an implementation of this specific to mypy. On Fri, May 11, 2018 at 11:34 AM, Antoine Pitrou <solip...@pitrou.net> wrote:
> > Yes, you don't want this to be a generic utility, rather a helper > library that people can integrate into their command-line applications > to enable such startup caching. > > Regards > > Antoine. > > > On Fri, 11 May 2018 17:27:35 +0200 > Oleg Broytman <p...@phdru.name> wrote: > > On Fri, May 11, 2018 at 07:38:05AM -0700, Chris Barker - NOAA Federal > via Python-Dev <python-dev@python.org> wrote: > > > Could one make a little startup utility that, when invoked the first > > > time, starts up a raw python interpreter, keeps it running somewhere, > > > and then forks it to run the actual python code. > > > > > > Then every invocation after that would make a new fork. > > > > Used to be implemented (and discussed in this list) many times. Just > > a few examples: > > > > http://readyexec.sourceforge.net/ > > https://blogs.gnome.org/johan/2007/01/18/introducing-python-launcher/ > > > > Proven to be hard and never gain any traction. > > > > a) you don't want the daemon to import all possible modules so you need > > to run a separate copy of the daemon for every Python version, every > > user and every client program; > > b) you need to find "your" daemon - using TCP? unix sockets? named pipes? > > b) need to redirect stdio to/from the daemon; > > c) need to redirect signals and exceptions; > > d) have problems with elevated privileges (how do you elevate the daemon > > if the client was started with `sudo -H`?); > > e) not portable (there is a popular GUI that cannot fork). > > > > > -CHB > > > Sent from my iPhone > > > > Oleg. > > > > _______________________________________________ > Python-Dev mailing list > Python-Dev@python.org > https://mail.python.org/mailman/listinfo/python-dev > Unsubscribe: https://mail.python.org/mailman/options/python-dev/ > guido%40python.org > -- --Guido van Rossum (python.org/~guido)
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