图文结合的编程入门书，简单易懂，入门必备基础书。不过是英文的，需要一点点阅读能力
Hello world!
Computer Programming for Kids
and Other Beginners
WAR尺 EN SANDE
CARTER SANDE
MANNING
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Seventh, corrected printing, may
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o our family,
tho inspire, encourage, and support us
in school work. and life
Contents
Preface xiii
Acknowledgments xⅸx
About this book xxi
Getting Started 1
Installing Python 1. Starting Python with IDLE 2. Instructions,
please 3- Interacting with Python 5. Time to program 7
Running your first program 8. If something goes wrong 9
Your second program 11
2 Remember This-Memory and Variables 14
Input, processing, output 14. Names 16. What's in a name? 20
Numbers and strings 21. How"variable"are they? 22. the new
me 23
3 Basic Math 26
The four basic operations 27. Operators 28- Order of
operations 29 a Two more operators 30- Really big and really
small 33
viii Contents
4 Types of Data 38
Changing types 38. Getting more information
Type-conversion errors 42. Using type conversions 42
5 Input 44
45·The
command and the comma 45
Inputting numbers 47. Input from the Web 49
6 GUls--Graphical User Interfaces 52
What's a gu!52· Our first gu|53· GUI input54
Pick your flavor 55. The number-guessing game . again 59
Other GUI pieces 60
7 Decisions, Decisions 62
Testing, testing 62.Indenting 65. Am I seeing double? 65
Other kinds of tests 66. What happens if the test is false? 67
Testing for more than one condition 69. Using"and"69
Using"or"70· Using"not”70
8 Loop the Loop 74
Counting loops 75. Using a counting loop 77. A shortcut
78. A matter of style--loop variable names 80
Counting by steps 82. Counting without numbers 84
While we re on the subject.. 84 Bailing out of a loop
an
d
85
9 Just for You--Comments 89
Adding comments 89. Single-line comments 90. End-of-line
comments 90. Multiline comments 90 Commenting style 91
Commenting out 92
10 Game Time 94
Skⅰer94
11 Nested and Variable Loops 99
Nested loops 99. Variable loops 101 Variable nested loops 102
Even more variable nested loops 103. Using nested loops 105
CoNTeNTS
12 Collecting Things Together-Lists 112
What's a list? 112, Creating a list 113. Adding things to a
list 113. What's the dot? 114. Lists can hold anything 114
Getting items from a list 115,"Slicing"a list 116. Modifying
items 118. Other ways of adding to a list 118. Deleting from a
list 120. Searching a list 121. Looping through a list 122
Sorting lists 123. Mutable and immutable 126. Lists of lists: tables
of data 126
13 Functions 131
Functions-the building blocks 131 calling a function 133
Passing arguments to a function 134. Functions with more than
one argument 137- Functions that return a value 139 variable
scope 140. Forcing a global 143. a bit of advice on naming
variables 144
14 Objects 146
Objects in the real world 147. Objects in Python 147
Object= attributes + methods 148. What's the dot? 149
Creating objects 149. An example class-HotDog 154
Hiding the data 159. Polymorphism and inheritance 159
Thinking ahead 162
15 Modules 164
What's a module? 164: Why use modules? 164. Buckets of
blocks 165. How do we create modules? 165. how do we use
modules? 166. Namespaces 167. Standard modules 170
16 Graphics 174
Getting some help-Pygame 174. A Pygame window 175
Drawing in the window 178. Individual pixels 186
mages190· Let's get moving!192· Animation193
Smoother animation 194. Bouncing the ball 196
Wrapping the ball 198
17 Sprites and Collision Detection 202
Sprites 202. Bump! Collision detection 208
Counting time 212
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