I start a new thread, since this is a new topic. I don't have the deep knowledge like Chris, Steven or Alan.
I guess most python installations have setuptools. But this is only my naive vague guess. How high is the percentage of python installation which don't have setuptools? I have no clue. Is it 5%, 10%, 15% ...? I know there is no definite answer to this question. But you can guess this better than me. Regards, Thomas Güttler Am 10.08.2017 um 12:01 schrieb Chris Warrick: > On 9 August 2017 at 23:15, Steven D'Aprano <st...@pearwood.info> wrote: >> On Tue, Aug 08, 2017 at 12:56:56PM +0200, Chris Warrick wrote: >> >>> While setuptools is not officially part of the stdlib, >> >> This is the critical factor. How can you use *by default* something that >> is *NOT* supplied by default? >> >> Obviously you cannot. It is physically impossible. > > > The problem with setuptools (and pip) is that they are not first-party > stdlib members, but they are not third-party packages either. They’re > somewhere in between. They have been blessed by the core developers. > And yes, setuptools might be in all the places you mentioned: > >> But this does NOT hold for everyone, possibly not even for the majority >> of Python users. For example: >> >> - students using their school's computers; >> >> - corporate and government users using a SOE (Standard Operating >> Environment); >> >> - people using a system where, for policy reasons, only the >> standard library is permitted. > > * If those computers run Windows (as they often do) and run a recent > Python version (3.4 or newer/2.7.9 or newer), setuptools will be > installed, unless the IT people explicitly disabled ensurepip. > * On macOS, setuptools will be installed if they’re using the system > Python, the python.org installers (which are not uninstallable), or > Python from Homebrew. The last two also have pip, and system Python > has ensurepip. > * On Linux, setuptools/pip is likely to be there, but it’s not > required in all distributions. (Fedora mandates setuptools; Debian > even rips out ensurepip by default and hides it in python3-venv > because reasons…) > > If the users are meant to install Python packages, their system > administrators would take care of that — either by setting up > setuptools/pip and perhaps virtualenv, or taking install requests from > users. If users are not supposed to be running setuptools/pip, they > probably shouldn’t, but they can still install it from ensurepip or > downloading get-pip.py. > >> I've worked in places where installing unauthorized software was a >> firing offence. > > Those people don’t need setuptools. Those people should not be using > distutils either. They might not even be allowed to download packages > and run __main__.py without installation. > -- Thomas Guettler http://www.thomas-guettler.de/ -- Thomas Guettler http://www.thomas-guettler.de/ _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
