New submission from Lukas Waymann <merib...@gmail.com>: PEP 405 says this:
> By default, a virtual environment is entirely isolated from the system-level > site-packages directories. > > If the pyvenv.cfg file also contains a key include-system-site-packages with > a value of true (not case sensitive), the site module will also add the > system site directories to sys.path after the virtual environment site > directories. The documentation of the site module (https://docs.python.org/3/library/site.html) says (emphasis added): > If pyvenv.cfg […] contains the key include-system-site-packages set to > anything other than false (case-insensitive), the system-level prefixes will > still also be searched for site-packages; *otherwise they won’t*. However, what actually happens in site.py is different: see <https://github.com/python/cpython/blob/3.6/Lib/site.py#L447>. The system_site variable is initialized to "true" and doesn't change unless the key include-system-site-packages exists in pyvenv.cfg. I think system_site should be initialized to "false" and the condition in line 468 should be `if system_site.lower() != "false"`. ---------- components: Library (Lib) messages: 316367 nosy: meribold priority: normal severity: normal status: open title: site.py: by default, a virtual environment is *not* isolated from the system-level site-packages directories type: behavior versions: Python 3.6, Python 3.7, Python 3.8 _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue33456> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
