[Python-ideas] Adding Python interpreter info to "pip install"

[Thomas Jollans]

On 20/07/18 05:10, Al Sweigart wrote:
> Sorry, I meant "pip list", rather than "pip info".
> 
> I thought about the fact that "pip --version" provides this info, but 1)
> it provides the location of pip, not the python interpreter it installs
> packages for and 2) it would be an additional step for the
> question-asker to go through after posting the output of "pip install".

If the extra line of output was something like

This is $(pip --version)

that would be more consistent, and provide enough information.

> 
> It would be nice to display output that the question-asker can compare
> directly with the output of "which python". And I'd like to shorten the
> potential amount of back-and-forth before the helper can get the
> information they need.
> 
> Additionally, while they could always just run "python -m pip install
> spam" but most tutorials tell them to run pip directly, so I still see
> the need for this.
> 
> 
> On Thu, Jul 19, 2018 at 5:50 PM, Chris Angelico <rosuav at gmail.com
> <mailto:rosuav at gmail.com>> wrote:
> 
>     On Fri, Jul 20, 2018 at 10:45 AM, Al Sweigart <asweigart at gmail.com
>     <mailto:asweigart at gmail.com>> wrote:
>     > The goal of this idea is to make it easier to find out when
>     someone has
>     > installed packages for the wrong python installation. I'm coming
>     across
>     > quite a few StackOverflow posts and emails where beginners are
>     using pip to
>     > install a package, but then finding they can't import it because
>     they have
>     > multiple python installations and used the wrong pip.
>     >
>     > For example, this guy has this problem:
>     >
>     https://stackoverflow.com/questions/37662012/which-pip-is-with-which-python
>     <https://stackoverflow.com/questions/37662012/which-pip-is-with-which-python>
>     >
>     > I'd propose adding a simple line to the output of "pip install"
>     that changes
>     > this:
>     >
>     > user at user:~$ pip3 install pyperclip
>     > Collecting pyperclip
>     > Installing collected packages: pyperclip
>     > Successfully installed pyperclip-1.6.2
>     >
>     > ...to something like this:
>     >
>     > user at user:~$ pip3 install pyperclip
>     > Running pip for /usr/bin/python3
>     > Collecting pyperclip
>     > Installing collected packages: pyperclip
>     > Successfully installed pyperclip-1.6.2
>     >
>     > This way, when they copy/paste their output to StackOverflow, it'll be
>     > somewhat more obvious to their helper that they used pip for the wrong
>     > python installation.
>     >
>     > This info would also be useful for the output of "pip info", but
>     that would
>     > break scripts that reads that output.
>     >
>     > Any thoughts?
> 
>     You can get some very useful information from "pip3 --version". As
>     well as pip's own version, it tells you the version of Python that
>     it's running under, AND what directory it's being run from. If you
>     want to request that similar info be added to other commands, I would
>     strongly recommend lifting the exact format of --version and using
>     that.
> 
>     (I'm not sure what "pip info" is, btw. My pip doesn't seem to have
>     that.)
> 
>     ChrisA
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