How can I install pip when there is already python but pip is missed?

Question

I'm using a remote server, which some others use together.

There are several versions of python installed.

I need python 3.6 version, and I can run it with /bin/python3.6 command.

And I also want to make a virtualenv of the version, so I tried /bin/python3.6 -m pip --version

But it showed

/bin/python3.6: No module named pip

When I checked the lib directory, ll /usr/lib/python3.6/site-packages/

total 0 drwxr-xr-x 2 root root 6 Dec 20  2017 __pycache__

It seems that the server has python3.6, but misses pip for that, right?

How can I resolve this, with the minimum modification?

The server is centos7.

Any thought or comment appreciated :)

@Varun Running `pip3` is practically the same as `python3 -m pip`, so I doubt that's going to work. — wjandrea, Jun 01 '20 at 03:49
Any chance you could use conda (miniconda) there? You will have much more control over package management right out of the box. — CypherX, Jun 01 '20 at 03:51
This might be a duplicate of [Recommended way to install pip(3) on centos7](https://stackoverflow.com/q/50408941/4518341). I don't use Cent OS so idk. — wjandrea, Jun 01 '20 at 03:58
@VarunNayak @wjandrea `pip3 --version` shows `command not found` — yoon, Jun 01 '20 at 04:42

score 0 · Answer 1 · answered Jun 01 '20 at 05:27

As drum mentioned at the comment, I installed pip referring to pip.pypa.io/en/stable/installing.

I ran the python file with /usr/bin/python3.6 get-pip.py.

After installing virtualenv, I faced virtualenv not found error.

You can solve the above error with the following link.(It was a path issue) Virtualenv Command Not Found

score 0 · Answer 2 · answered Jun 01 '20 at 17:11

In case you don't want to modify the system Python you can just use the zipapp version of virtualenv to create a virtual environment at some arbitrary location with latest pip included (see https://virtualenv.pypa.io/en/latest/installation.html#via-zipapp).

wget https://bootstrap.pypa.io/virtualenv/virtualenv.pyz
python3.6 /full/path/to/downloaded/virtualenv.pyz ~/virtualenv

~/virtualenv/bin/python -m pip list

That's probably the minimum harmful modification, and ensure that messing with the system python does not break your system python applications/environment.

How can I install pip when there is already python but pip is missed?

2 Answers2