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: "The technique we will use for dimensionality reduction is known as principal component analysis (PCA), and is available in the scikit-learn library."
A block of code is set as follows:
import numpy as np
np_array = np.array( [0, 1, 2, 3] )
# Creating an array with ten elements initialized as zero
np_zero_array = np.zeros(10)
When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:
[default]
exten => s,1,Dial(Zap/1|30)
exten => s,2,Voicemail(u100)
exten => s,102,Voicemail(b100)
exten => i,1,Voicemail(s0)
Warnings or important notes appear like this.
Tips and tricks appear like this.