{"id":1408,"date":"2018-12-15T12:22:09","date_gmt":"2018-12-15T04:22:09","guid":{"rendered":"https:\/\/www.techcoil.com\/blog\/?p=1408"},"modified":"2018-12-15T12:22:09","modified_gmt":"2018-12-15T04:22:09","slug":"how-to-create-a-virtual-environment-for-your-python-3-application-with-python3-venv-in-linux-or-unix","status":"publish","type":"post","link":"https:\/\/www.techcoil.com\/blog\/how-to-create-a-virtual-environment-for-your-python-3-application-with-python3-venv-in-linux-or-unix\/","title":{"rendered":"How to create a virtual environment for your Python 3 application with python3-venv in Linux or Unix"},"content":{"rendered":"

The python3-venv<\/a> module allows us to create lightweight \u201cvirtual environments\u201d with their own site directories, optionally isolated from system site directories. Given that, we will be able to run multiple Python 3 environments with varying dependencies on the same computer. <\/p>\n

This post shows how to create a virtual environment for your Python 3 application with python3-venv in Linux or Unix.<\/p>\n

When you want to create a virtual environment for your Python 3 application inside ~\/my_py3_venv<\/code>, you can run the following command in your terminal shell:<\/p>\n

\r\npython3 -m venv ~\/my_py3_venv\r\n<\/pre>\n
After the command complete, you should be able to find the virtual environment inside the ~\/my_py3_venv directory.<\/p>\n
Getting into your Python 3 virtual environment with your terminal window<\/h2>\n
In order to get into your Python 3 virtual environment with your terminal window, you need to run the activate<\/code> script. Given that, run the following command to get into your Python 3 virtual environment:<\/p>\n
\r\nsource ~\/my_py3_venv\/bin\/activate\r\n<\/pre>\n
After the command complete, you will find that your terminal prompt is appended with (my_py3_venv)<\/strong>. While inside this virtual environment, you can install any Python dependencies with the pip<\/a> command. For example, if you wish to install Flask<\/a>, you can run the following command:<\/p>\n
\r\npip install flask\r\n<\/pre>\n
When you had installed the necessary dependencies for your Python 3 application, you can then run your application with the python<\/code> binary:<\/p>\n
\r\npython run_your_app.py\r\n<\/pre>\n
Getting out of your Python 3 virtual environment<\/h2>\n
In order to get out of your Python 3 virtual environment, you need to run the following command:<\/p>\n
\r\ndeactivate\r\n<\/pre>\n
After the command completes, you will find that your terminal prompt is not appended with (my_py3_venv)<\/strong>. At this point in time, whatever dependencies that you had added while inside the virtual environment will not be available.<\/p>\n\n