I am not sure I fully understand. Both in web2py and Django you create multiple instances of the server (either by replicating the code or by simply starting it twice) and you can have them serve different applications. If you do you have them see different virtualenvs. In web2py you also have the option of running multiple applications under the same instance and this is what people usually prefer. In this case there is only only one process and by definition one virtualenv.
You cannot have different virtualenvs for for applications that run under the same process because virtualenv wraps the process. The point here is that python sys.path is not thread safe in the sense that you cannot have different ones in different threads. You cannot have two functions running concurrently change sys.path without breaking the interpreter. Massimo On Tuesday, 26 August 2014 03:24:21 UTC-5, Kuba Kozłowicz wrote: > > Well actually you are right. I just thought about web2py as a big hub of > applications, where each application shares the very same interpreter, > which I do not like because of aforementioned reasons. > > In django I'd simply create another instance to solve that problem and > include a URL to it somewhere. > > As to web2py technically I could do the same, but it would require > creating "second" hub of applications, which for me is a bit contrary to > the idea of having one central point of management ( like an intranet or > smth similar ). > > But, yeah I think I wanted too much, every framework works this way, > however I think this feature ( of having separate interpreters for separate > apps ) would be nice to have. > > W dniu poniedziałek, 25 sierpnia 2014 19:08:26 UTC+2 użytkownik Derek > napisał: >> >> That's not possible for django or any other python webapp. where did you >> get this idea? >> >> On Monday, August 25, 2014 1:12:12 AM UTC-7, Kuba Kozłowicz wrote: >>> >>> Yea, well with different instances you can do it, but I asked if that is >>> possible for one instance, which contains multiple apps. >>> >>> So it's impossible. >>> >>> W dniu niedziela, 24 sierpnia 2014 12:13:57 UTC+2 użytkownik Michele >>> Comitini napisał: >>>> >>>> I think you just need to make some python virtualenvs for each set of >>>> modules and then run *different* instances of web2py. You can do that >>>> easily and in many different ways. >>>> >>>> >>>> 2014-08-22 12:21 GMT+02:00 Kuba Kozłowicz <kole...@gmail.com>: >>>> >>>>> I know I can put app-specific modules into application/<app>/modules. >>>>> This is not what I meant. >>>>> >>>>> I mean I want a different python interpreter per each app - is that >>>>> possible? >>>>> Because one of them will have installed library in version X and the >>>>> other one will have installed the same libary, but in version Y. >>>>> >>>>> Imagine I have one app running some processes using let's say Twisted >>>>> 2.0. >>>>> >>>>> Then after a year Twisted 3.0 is published and I want to now to >>>>> develop new apps using the newest version. >>>>> >>>>> If version 3.0 is not backwards compatibile then I will have to either >>>>> rewrite old stuff to newest version, or keep using old version. >>>>> >>>>> This is the problem I want to solve. >>>>> >>>>> W dniu środa, 20 sierpnia 2014 20:15:06 UTC+2 użytkownik Massimo Di >>>>> Pierro napisał: >>>>> >>>>>> Yes. you put them in application/<app>/modules/ and then each app >>>>>> will import from there. >>>>>> Some modules break when you do this. If it happens bring it up here >>>>>> and we can tell you how to fox them. >>>>>> >>>>>> On Monday, 18 August 2014 03:45:34 UTC-5, Kuba Kozłowicz wrote: >>>>>>> >>>>>>> I would like to know if it is possible to install different set of >>>>>>> modules for each application separately. >>>>>>> >>>>>>> I have a Web2py instance, which consists of serveral applications >>>>>>> and the number of applications will grow. Some of those apps use >>>>>>> library X >>>>>>> in version Y. The apps, that will be deployed in the future will be >>>>>>> using >>>>>>> the very same library X but in newer version. My question is if it is >>>>>>> possible to install the same module in different version for separate >>>>>>> apps? >>>>>>> >>>>>>> Or is one forced to either use old version with all apps or update >>>>>>> all of them if one wanted to upadate version of the library X? >>>>>>> >>>>>> -- >>>>> Resources: >>>>> - http://web2py.com >>>>> - http://web2py.com/book (Documentation) >>>>> - http://github.com/web2py/web2py (Source code) >>>>> - https://code.google.com/p/web2py/issues/list (Report Issues) >>>>> --- >>>>> You received this message because you are subscribed to the Google >>>>> Groups "web2py-users" group. >>>>> To unsubscribe from this group and stop receiving emails from it, send >>>>> an email to web2py+un...@googlegroups.com. >>>>> For more options, visit https://groups.google.com/d/optout. >>>>> >>>> >>>> -- Resources: - http://web2py.com - http://web2py.com/book (Documentation) - http://github.com/web2py/web2py (Source code) - https://code.google.com/p/web2py/issues/list (Report Issues) --- You received this message because you are subscribed to the Google Groups "web2py-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to web2py+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
