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?
I don't know if it's best practices or not, but if I also install python3-venv and python3.7-venv then everything works (this is tested on a fresh stock Debian buster docker image):
% sudo apt install python3.7 python3-venv python3.7-venv
% python3.7 -m venv py37-venv
% . py37-venv/bin/activate
(py37-venv) %
Note that it also installs all of python3.6 needlessly, so I can't exactly say I like it, but at least it does work and doesn't require running an unsigned script the way get-pip.py does.
sudo apt install python3-venv
python3 -m venv env
I was creating a new virtual environment on Ubuntu 20.04:
$ virtualenv my_env
But it gave an error:
ModuleNotFoundError: No module named 'virtualenv.seed.embed.via_app_data'
Other info:
$ virtualenv --version
virtualenv 20.0.17 from /usr/lib/python3/dist-packages/virtualenv/__init__.py
#yushulx
I also ran into the same issue. I installed both via pip3 and via sudo apt install python3-virtualenv and it gave me an error but after I ran pip3 uninstall virtualenv I could create a virtualenv without issue
Try to create the virtual environment using directly venv module
python3 -m venv my_env
To fix this on Ubuntu 20.04, I had to uninstall virtualenv from the system: apt remove python3-virtualenv, and reinstall it using pip: pip install --user virtualenv --force-reinstall. I had errors about dependencies conflicts, I fixed them by calling pip install --user ${package} --force-reinstall for every package involved.
virtualenv is installed by default with python itself and when you install virtualenv via pip3 and try to create virtual environment using pipenv you will get this error:
ModuleNotFoundError: No module named 'virtualenv.seed.embed.via_app_data
check the version of installed virtualenv using apt list --installed
mine is:
python3-virtualenv/focal,focal,now 20.0.17-1 all [installed,automatic]
with the installed virtualenv by pip3
min is :
virtualenv 20.4.0
default installation of virtualenv is different with pip3 installed virtualenv
so when you try to create a virtual environment using pipenv for example installing django in a directory home/user/djano with pipenv install django~=3.1.5 you will get that error
the solution is remove installed virtualenv using pip3 uninstall virtualenv and use the default installation of virtualenv this time when you create virtual environment with pipenv it will create it successfully.
I want to have virtualenvwrapper. On Debian 10 testing I did:
apt remove python3-virtualenvwrapper # not purge, I want no changes in ~/.virtualenvs/
apt purge python3-virtualenv
/usr/bin/python3.8 -m pip install --force-reinstall virtualenvwrapper
/usr/bin/python3.8 -m pip install --force-reinstall virtualenv==20.0.23
.24 no longer works. I hope it will be solved sometimes...
EDIT 2021.01: I have changed my stack to: pyenv + pyenv-virtualenvwrapper + poetry. Ie. I use no apt or pip installation of virtualenv or virtualenvwrapper, and instead I install pyenv's plugin pyenv-virtualenvwrapper. This is easier way.
If someone encounters this problem inside existing env (when for example using pyenv) you can also use command below (found on GitHub when tried to fix poetry virtual env installation):
pip install --force-reinstall virtualenv
When I installed virtualenv via pip3, it failed to run virtualenv command. Then I changed the installation via:
sudo apt install python3-virtualenv
The virtualenv command can normally work.
I too had this issue. What I found is it is a permissions issue. For some unknown reason ownership of my home directory was off. I did a chown -R for the directory I was using for my project making myself the owner of my own directory and now everything works as normal.
I also had same issue, seems installed version has different user level so I followed their doc and below one work for me:
python3 -m virtualenv --help
To create new environment:
python3 -m virtualenv my_env
I also faced the same issue but after removing virtualenv which was installed with pip3, I could get rid of this error. Uninstall virtualenv with below command (don't forget to use sudo)
sudo pip3 uninstall virtualenv
After this, virtualenv command works totally fine.
It means that there are two virtualenv in your system.
One is "pip install" by sudo or root, the other may be installed by apt(if you are using ubuntu os)
Just uninstall one of them and the error should be fixed.
I fixed this error by removing all virtualenv and virtualenvwrapper related packages on system and reinstall the virtualenv and virtualenvwrapper with pip with below command(as i use ubuntu, so below only show apt)
remove all packages shown in below result
apt list --installed | grep virtualenvwrapper
apt list --installed | grep virtualenvwrapper
install virtualenv virtualenvwrapper with pip
pip install virtualenvwrapper virtualenvwrapper
set ~/.zshrc
export WORKON_HOME=$HOME/.virtualenvs
export PROJECT_HOME=$HOME/amd
export VIRTUALENVWRAPPER_SCRIPT=/home/robot/.local/bin/virtualenvwrapper.sh
export VIRTUALENVWRAPPER_PYTHON=$(which python3)
source /home/robot/.local/bin/virtualenvwrapper.sh
When we use pip3 or python3 to install virtualenv then I got that error too. I had to run each time to create virtualenv (my_env is virtual environment name)
python3 -m virtualenv my_env
But if I install it using
sudo apt install virtualenv
Then virtualenv command works fine.
virtualenv my_env
I'm a complete beginner to Ubuntu and I'm trying to create a virtual environment on Ubuntu 18.04. I had one running and it was working just fine, but I don't know what I did and know I cant get it to run.
I deleted my old env/ file and now I'm trying to create a new one using
python3 -m venv env
but I get the following error
Error: Command '['/home/user/app/env/bin/python3', '-Im', 'ensurepip', '--upgrade', '--default-pip']' returned non-zero exit s
tatus 1.
What gives?
Do you have the python3-venv package installed?
If not - install it with apt-get install python3-venv and try again python3 -m venv env
just reinstall your python3-venv
apt-get purge python3-venv
apt-get install python3-venv
and then create the virtualenv
python3.7 -m venv venvTest
if you have different version of python3, you should mention the exact python3 version.
you can also migrate your python3.6 to python3.7 by following guide migrate python3.6 to python3.7
I'm having trouble installing packages using virtualenv with python. I do the following:
sudo virtualenv venv
cd venv/bin
source activate
pip install nose
I get the following error:
unable to execute /Users/../venv/bin/pip: No such file or directory
What am I doing wrong here?
run:
cd /usr/local/bin
sudo ./pip install virtualenv
which virtualenv
This should point to /usr/local/bin/virtualenv
which pip
This should point to /usr/local/bin/pip
virtualenv /Users/yourname/path/to/env/envname
I have python virtualenv and trying to install nodeenv it throws
"no python virtualenv is available"
inside my activated python virtual env with . bin/activate
I run the following commands
pip install nodeenv
nodeenv -p
And it throws the error... I'm currently trying to install less with django-compressor
This also happened to me, it's because nodeenv is not installed in your virtual environment. The following solved it for me:
sudo pip uninstall nodeenv
# Source your virtual environment.
source /path/to/virtualenv
pip install nodeenv
nodeenv -p
This happened to me on Mac OSX Yosemite.
I had installed nodeenv as a user. The solution was to install it as root:
pip uninstall nodeenv
sudo pip install nodeenv
# Source the virtual environment or use workon for virtualenvwrapper
workon <virtualenv name>
nodeenv -p