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Conventions used

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: "Mount the downloaded WebStorm-10*.dmg disk image file as another disk in your system."

A block of code is set as follows:

import numpy as np 
import sys
import matplotlib.pyplot as plt

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

def random_action():
# a = 0 : top/north
# a = 1 : right/east
# a = 2 : bottom/south
# a = 3 : left/west
a = np.random.randint(nact)
return a

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

sudo apt-get install python-numpy python-scipy python-matplotlib

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: "Select System info from the Administration panel."

Warnings or important notes appear like this.
Tips and tricks appear like this.

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