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

CodeInText: Indicates code words in the text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: "we visualized a time series dataset using the
matplotlib and seaborn libraries."

A block of code is set as follows:

import os
import numpy as np
%matplotlib inline from matplotlib
import pyplot as plt
import seaborn as sns

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

> pip install virtualenv
> virtualenv Local_Version_Directory -p Python_System_Directory

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: "Time series data may contain a notable amount of outliers."