I'm trying to set up a standard virtual-environment(venv) with python 3.7 on Ubuntu 18.04, with pip (or some way to install packages in the venv). The standard way to install python3.7 seems to be:
% sudo apt install python3.7 python3.7-venv
% python3.7 -m venv py37-venv
but the second command fails, saying:
The virtual environment was not created successfully because ensurepip
is not available. On Debian/Ubuntu systems, you need to install the
python3-venv package using the following command.
apt-get install python3-venv
You may need to use sudo with that command. After installing the
python3-venv package, recreate your virtual environment.
Failing command: ['/py37-venv/bin/python3.7', '-Im', 'ensurepip',
'--upgrade', '--default-pip']
This is true; there is no ensurepip nor pip installed with this python. And I did install python3.7-venv
already (python3-venv
is for python3.6 on Debian/Ubuntu). I gather there has been some discussion about this in the python community because of multiple python versions and/or requiring root access, and alternate ways to install python modules via apt
or similar.
Creating a venv without pip (--without-pip
) succeeds, but then there's no way to install packages in the new venv which seems to largely defeat the purpose.
So what's the accepted "best practice" way to install and use python3.7 on 18.04 with a venv?
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