python -m pip install and pip install

[Hongyi Zhao]

Hongyi Zhao <hongyi.zhao at gmail.com> 于2019年10月8日周二 下午4:53写道：
>
> Cameron Simpson <cs at cskk.id.au> 于2019年10月8日周二 下午12:25写道：
> >
> > On 08Oct2019 02:49, Hongyi Zhao <hongyi.zhao at gmail.com> wrote:
> > >On Tue, 08 Oct 2019 06:28:05 +0530, Pankaj Jangid wrote:
> > >> A very good use-case is when you have both, python2 and python3
> > >> installed.
> > >> python2 -m pip install mod
> > >> python3 -m pip install mod
> > >> will install the package in the corresponding PYTHONPATH.
> > >>
> > >
> > >If so, why not just:
> > >pip2 install mod
> > >and using:
> > >pip3 install mod
> >
> > Because of the slight disconnect between "pip2" and "python2", etc. Do
> > you _know_ they both use the same Python install? With "pythonX -m pip"
> > you're using the same python executable which will be accessing what you
> > just installed.
>
> I use pyenv + pip, which will do the trick.

And nowadays, the pyenv + vurtualenv + pip + pipenv is the suggested
env management method for python.
In this way, the pipenv will solve the version dependence of the
underlying tool chain and corresponding used packages/modules.


>
> >
> > It isn't a deal breaker, but preferred: one less moving part.
> >
> > Cheers,
> > Cameron Simpson <cs at cskk.id.au>
>
>
>
> --
> Hongsheng Zhao <hongyi.zhao at gmail.com>
> Institute of Semiconductors, Chinese Academy of Sciences
> GnuPG DSA: 0xD108493



-- 
Hongsheng Zhao <hongyi.zhao at gmail.com>
Institute of Semiconductors, Chinese Academy of Sciences
GnuPG DSA: 0xD108493