web2py_manual_5th.pdf

MASSIMODIPIERRO

WEB2PY

COMPLETEREFERENCEMANUAL,5THEDITION

EXPERTS4SOLUTIONS

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For more information about appropriate use of this material contact:

Massimo Di Pierro

School of Computing

DePaul University

243 S Wabash Ave

Chicago, IL 60604 (USA)

Email: massimo.dipierro@gmail.com

Library of Congress Cataloging-in-Publication Data:

ISBN:978-0-578-12021-8

Build Date: March3,2013

to my family

Contents

1 Introduction 23

1.1 Principles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

1.2 Web frameworks . . . . . . . . . . . . . . . . . . . . . . . . . 26

1.3 Model-View-Controller . . . . . . . . . . . . . . . . . . . . . . 28

1.4 Why web2py . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

1.5 Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

1.6 In the box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

1.7 About this book . . . . . . . . . . . . . . . . . . . . . . . . . . 37

1.8 Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

1.9 Contribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

1.10Elements of style . . . . . . . . . . . . . . . . . . . . . . . . . 40

1.11License . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

1.12Acknowledgments

. . . . . . . . . . . . . . . . . . . . . . . . 42

2 The Python language 47

2.1 About Python . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

2.2 Starting up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

2.3 help, dir . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

2.4 Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

2.4.1 str . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

2.4.2 list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

2.4.3 tuple . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

2.4.4 dict . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

2.5 About indentation . . . . . . . . . . . . . . . . . . . . . . . . 55

2.6 for...in . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

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