First, we need to install
pip, which will help us create a standalone virtual environment where we can specify the version of Python. It is also possible to install specific versions of third-party libraries.
pip install virtualenv
Creating a virtual environment with virtualenv
Before using the
virtualenv command to create a virtual environment, we need to enter a specified directory, because virtualenv will create various configuration files for this virtual environment in the current path.
cd ~/python # Choose your path virtualenv my_env_name
"my_env_name" will be the name of the virtual environment we create (the name is up to you). Since we are in the
virtualenv will create a directory named "my_env_name" in this path, which will generate a set of files needed for the virtual environment.
Activate/Deactivate the virtual environment
.\my_env_name\Scripts\activate # On Windows
source my_env_name/bin/activate # On Mac or Linux
With the virtual environment active, type
When using a virtual environment, you'll need to install all required packages inside the virtual environment. Virtual environments are isolated from each other and from the system's default Python environment.