Python virtualenv
https://mothergeo-py.readthedocs.io/en/latest/development/how-to/venv.html
virtualenv is a tool to create isolated Python environments. You can read more about it in the Virtualenv documentation. This article provides a quick summary to help you set up and use a virtual environment.
A Note About Python 3.6 and Ubuntu 16.04 LTS
If you’re running Ubuntu 16.04 LTS (or and earlier version), Python 3.5 is likely installed by default. Don’t remove it! To get Python 3.6, follow the instructions in this section.
Add the PPA
Run the following command to add the Python 3.6 PPA.
Check for Updates and Install
Check for updates and install Python 3.6 via the following commands.
Now you have three Python version, use python to run version 2.7, python3 for version 3.5, and python3.6 for version 3.6.
For more information on this subject, check out Ji m’s article How to Install Python 3.6.1 in Ubuntu 16.04 LTS.
Create a Virtual Python Environment
cd to your project directory and run virtualenv to create the new virtual environment.
The following commands will create a new virtual environment under my-project/my-venv.
Activate the Environment
Now that we have a virtual environment, we need to activate it.
After you activate the environment, your command prompt will be modified to reflect the change.
Add Libraries and Create a requirements.txt File
After you activate the virtual environment, you can add packages to it using pip. You can also create a description of your dependencies using pip.
The following command creates a file called requirements.txt that enumerates the installed packages.
This file can then be used by collaborators to update virtual environments using the following command.
Deactivate the Environment
To return to normal system settings, use the deactivate command.
After you issue this command, you’ll notice that the command prompt returns to normal.
Last updated
Was this helpful?