Conventions used

There are a number of text conventions used throughout this book.

Code in text: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: “Next, pass the arguments dictionary to DAG().”

A block of code is set as follows:

import datetime as dt from datetime import timedelta
from airflow import DAG from airflow.operators.bash_operator import BashOperator from airflow.operators.python_operator import PythonOperator
import pandas as pd

Any command-line input or output is written as follows:

# web properties #
nifi.web.http.port=9300

Bold: Indicates a new term, an important word, or words that you see on screen. For example, words in menus or dialog boxes appear in the text like this. Here is an example: “Click on DAG and select Tree View.”

Tips or important notes

Appear like this.