Bioinformatics with Python Cookbook - Second Edition

How to do it…

Take a look at the following steps:

1. Create a virtual environment and install Airflow along with matplotlib (which we will use in the next recipe):

virtualenv .aflow. .aflow/bin/activateexport AIRFLOW_GPL_UNIDECODE=yespip install apache-airflowpip install matplotlib

With virtualenv, you might want to specify the Python interpreter with the -p parameter, like this: virtualenv -p /usr/bin/python3 .aflow. Do not forget to activate the environment before starting Airflow.

2. Let's now initialize Airflow's database:

airflow initdb

This will initialize an SQLite database. This is only useful for very basic testing purposes: with an SQLite database, no concurrency will be possible, defeating a lot of the purpose of using a workflow ...