Snake Wrangling for Kids - Learning to Program with Python 2, linux-v0.7.2 (2007).pdf - python - Pinus000

Snake Wrangling for Kids, Learning to Program with Python

by Jason R. Briggs

Version 0.7.2

Published by... ah, no one actually.

Cover art and illustrations by Nuthapitol C.

Website:

http://www.briggs.net.nz/log/writing/snake-wrangling-for-kids

Thanks To:

Guido van Rossum (for benevelont dictatorship of the Python language), the mem-

bers of the Edu-Sig mailing list (for helpful advice and commentary), and author

David Brin (the original instigator of this book).

License:

This work is licensed under the Creative Commons Attribution-Noncommercial-

Share Alike 3.0 New Zealand License. To view a copy of this license, visit

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Commons, 171 Second Street, Suite 300, San Francisco, California, 94105, USA.

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Nothing in this license impairs or restricts the author’s moral rights.

Contents

Preface

iii

1 Not all snakes will squish you 1

1.1 A Few Words About Language . . . . . . . . . . . . . . . . . . . . . 3

1.2 The Order of Non-venomousConstricting Serpentes. . . . . . . . . . . . 3

1.3 Your ﬁrst Python program . . . . . . . . . . . . . . . . . . . . . . . . 4

1.4 Your Second Python program. . .the same again? . . . . . . . . . . . . 5

2 8 multiplied by 3.57 equals. . .

2.1 Use of brackets and “Order of Operations” . . . . . . . . . . . . . . . 11

2.2 There’s nothing so ﬁckle as a variable . . . . . . . . . . . . . . . . . . 13

2.3 Using Variable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.4 A Piece of String? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2.5 Tricks with Strings . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

2.6 Not quite a shopping list . . . . . . . . . . . . . . . . . . . . . . . . . 19

2.7 Tuples and Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

2.8 Things to try . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

3 Turtles, and other slow moving creatures 25

3.1 Things to try . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

4 How to ask a question

4.1 Do this. . . or ELSE!!! . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

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