I’m trying to install pip
for Python 3.8
on an Ubuntu 18.04 LTS
.
I know this has been asked way too many times. But those questions do not concern keeping Ubuntu’s defaults specifically. And the answers on those questions either don’t work or go on to suggest something so drastic that it would break the system – e.g. change default
python3
version from3.6
to3.8
. You SHOULDN’T!
So far, I’ve been able to install python3.8
successfully using the PPA
– ppa:deadsnakes/ppa
:
sudo add-apt-repository ppa:deadsnakes/ppa sudo apt update sudo apt install python3.8
Changed python
command from python2
to python3.8
using update-alternatives
:
update-alternatives --remove python /usr/bin/python2 sudo update-alternatives --install /usr/bin/python python /usr/bin/python3.8 10
Now, I get python 3.8
when I run python --version
:
Python 3.8.5
The problem is, I still can’t install pip
for Python 3.8
.
If I try to install python3-pip
, it installs pip
for Python 3.6
since python3
still points to python3.6.9
, and I intend to keep it that way.
Try installing python-pip
, and it will install pip
for Python 2.7
.
Also there’s no such package as python3.8-pip
, so I can’t install it like:
sudo apt install python3.8-pip
Output:
E: Unable to locate package python3.8-pip
E: Couldn’t find any package by glob ‘python3.8-pip’
E: Couldn’t find any package by regex ‘python3.8-pip’
What can I do to install pip
for Python 3.8
on an Ubuntu 18.04?
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Answer
While we can use pip
directly as a Python module
(the recommended way):
python -m pip --version
This is how I installed it (so it can be called directly):
Firstly, make sure that command pip
is available and it isn’t being used by pip
for Python 2.7
sudo apt remove python-pip
Now if you write pip
in the Terminal, you’ll get that nothing is installed there:
pip --version
Output:
Command ‘pip’ not found, but can be installed with:
sudo apt install python-pip
Install python3.8
and setup up correct version on python
command using update-alternatives
(as done in the question).
Make sure, you have python3-pip
installed:
(This won’t work without python3-pip
. Although this will install pip 9.0.1 from python 3.6
, we’ll need it.)
sudo apt install python3-pip
This will install pip 9.0.1
as pip3
:
pip3 --version
Output:
pip 9.0.1 from /usr/lib/python3/dist-packages (python 3.6)
Now, to install pip
for Python 3.8
, I used pip
by calling it as a python module
(ironic!):
python -m pip install pip
Output:
Collecting pip
Downloading https://files.pythonhosted.org/packages/36/74/38c2410d688ac7b48afa07d413674afc1f903c1c1f854de51dc8eb2367a5/pip-20.2-py2.py3-none-any.whl (1.5MB)
100% |████████████████████████████████| 1.5MB 288kB/s
Installing collected packages: pip
Successfully installed pip-20.2
It looks like, when I called pip
(which was installed for Python 3.6, BTW) as a module of Python 3.8, and installed pip
, it actually worked.
Now, make sure your ~/.local/bin
directory is set in PATH
environment variable:
Open ~/.bashrc
using your favourite editor (if you’re using zsh
, replace .bashrc
with .zshrc
)
nano ~/.bashrc
And paste the following at the end of the file
# set PATH so it includes user's private bin if it exists if [ -d "$HOME/.local/bin" ] ; then PATH="$HOME/.local/bin:$PATH" fi
Finally, source your .bashrc
(or restart the Terminal window):
source ~/.bashrc
Now if you try running pip
directly it’ll give you the correct version:
pip --version
Output:
pip 20.2 from /home/qumber/.local/lib/python3.8/site-packages/pip (python 3.8)
Sweet!