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

CodeInText: 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: "Where GROUP is a service or an account element and COMMAND is the command to send to the GROUP."

A block of code is set as follows:

import matplotlib.patches as patches
import numpy as np
fig,ax = plt.subplots(1)

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

text="this is a good text"
from google.cloud.language_v1 import types
document = types.Document(
        content=text,
        type='PLAIN_TEXT')

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

$ gcloud compute instances list

Bold: Indicates a new term, an important word, or words that you see onscreen. For example, words in menus or dialog boxes appear in the text like this. Here is an example: "Click on Create a new project."