What installs "pip"?

Russell Jones russell.jones at physics.ox.ac.uk
Sun Nov 18 18:07:38 UTC 2018

On 18/11/2018 17:59, Michael wrote:
> On 2018-11-18, at 9:55 AM, Russell Jones <russell.jones at physics.ox.ac.uk> wrote:
>> On 18/11/2018 17:41, Michael wrote:
>>> Which port actually installs pip?
>>> keybounceMBP:js-beautify michael$ port select --summary
>>> Name       Selected  Options
>>> ====       ========  =======
>>> cython     none      cython27 none
>>> db         none      db46 db48 none
>>> llvm       none      mp-llvm-3.5 mp-llvm-3.7 mp-llvm-4.0 mp-llvm-5.0 mp-llvm-6.0 none
>>> nosetests  none      nosetests27 none
>>> pip        none      pip36 none
>>> pygments   none      py36-pygments none
>>> python     python36  python25-apple python26 python26-apple python27 python27-apple python36 none
>>> python2    none      python25-apple python26 python26-apple python27 python27-apple none
>>> python3    none      python36 none
>>> keybounceMBP:js-beautify michael$ ls /opt/local/bin/pip*
>>> 4 /opt/local/bin/pip-3.6@
>>> keybounceMBP:js-beautify michael$
>>> ---
>>> Entertaining minecraft videos
>>> http://YouTube.com/keybounce
>> In python 3.4+, the pip module is built in. So in python3.7, for
>> instance, you can use python3.7 -m pip. Alternatively, use the port
>> select system, so pip and pip3 are set to pip3.6
>> In python2, you need py27-pip, and I guess it shows up in port select
>> similarly.
>> Russell
> Aha. So,
> keybounceMBP:js-beautify michael$ port select pip pip36
> Selecting 'pip36' for 'pip' failed: could not create new link "/opt/local/bin/pip" pointing to "/opt/local/Library/Frameworks/Python.framework/Versions/3.6/bin/pip": permission denied
> keybounceMBP:js-beautify michael$ sudo !!
> sudo port select pip pip36
> Password:
> Selecting 'pip36' for 'pip' succeeded. 'pip36' is now active.
> keybounceMBP:js-beautify michael$
> While installing pip36 does result in "port select --summary" showing that it is active, it actually is NOT until you run the port select command. Odd.
> (Equally odd -- installing python36 in the first place did not install a pip if it is part of the python system).
> Side question: Why is there not just a "python3", why do we have to specifically select one of several versions?
> ---
> Entertaining minecraft videos
> http://YouTube.com/keybounce
I think pip-3.6, etc, are always available.

I guess the Python 3 port file (python3.6, etc, are sub-ports, IIRC) 
can't tell if a python3 is already installed, so it doesn't try to guess 
for you which you want. Similarly pip/pip3, etc.


More information about the macports-users mailing list