Sometimes we have more than one project running in one machine and sometimes they require same package with different version. In that case, installing package with one version will crash other project that require different version of the package. And that is why we need Virtual Environment.
Virtual environment is tool that creates separate environment for separate project. virtualenv is Python module that allows to create Virtual Environment for Python projects which could break system tools or other projects. All Python packages are called as Python module.
This article will share you details how to create virtual environment for python.
You need to have non-root user account logged in with sudo privileges to set up on your server. Pip installed which will install Python modules. We will install Python3 modules in this article.
Open the terminal by using the
CTRL+ALT+T keyboard shortcut or by running a search in Ubuntu Dash. Now run any of the following command to install virtual environment.
sudo apt-get install python3-virtualenv
python3 -m pip install virtualenv
pip3 install virtualenv
You can check environment version by running following command:
Run any of the following command to create virtual environment:
python3 -m venv newenv
virtualenv -m newenv
This will create Virtual Environment folder named newenv. This folder is the Virtual Environment and all Python modules for this environment will install in this folder.
Use this command to activate virtual environment
This will prefix environment name in Terminal window when you activate Virtual Environment like this:
(newenv) [email protected]:~#
When you have Virtual Environment activated and you install new Python modules, it will be installed for that specific environment only. It will not affect Python modules installed Globally. Install Python modules with Pip with running command:
pip3 install <package_name>
If you need to deactivate environment, run bellow command:
So now you have created virtual environment named newenv. You can create as many Virtual Environment as you want with any name.
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