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This book will introduce you to the Python programming language. It’s aimed at beginning programmers, but even if you’ve written programs before and just want to add Python to your list of languages, Introducing Python will get you started. It’s an unhurried introduction, taking small steps from the basics to more involved and varied topics. I mix cookbook and tutorial styles to explain new terms and ideas, but not too many at once. Real Python code is included early and often. Even though this is an introduction, I include some topics that might seem advanced, such as NoSQL databases and message-passing libraries. I chose these because they can solve some problems better than standard solutions. You’ll download and install external Python packages, which is good to know when the “batteries included” with Python don’t fit your application. And it’s fun to try something new. I also include some examples of what not to do, especially if you’ve programmed in other languages and try to adapt those styles to Python. And I won’t pretend that Python is perfect; I’ll show you what to avoid.

1. A Taste of Py. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Python in the Real World 5 Python versus Language X 6 So, Why Python? 9 When Not to Use Python 9 Python 2 versus Python 3 10 Installing Python 10 Running Python 11 Using the Interactive Interpreter 11 Use Python Files 12 What’s Next? 13 Your Moment of Zen 13 Things to Do 14 2. Py Ingredients: Numbers, Strings, and Variables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Variables, Names, and Objects 15 Numbers 19 Integers 19 Precedence 23 Bases 24 Type Conversions 25 How Big Is an int? 26 Floats 27 Math Functions 27 Strings 27 Create with Quotes 28 Convert Data Types by Using str() 30 Escape with 30 Combine with + 31 Duplicate with * 32 Extract a Character with [] 32 Slice with [ start : end : step ] 33 Get Length with len() 35 Split with split() 35 Combine with join() 36 Playing with Strings 36 Case and Alignment 37 Substitute with replace() 38 More String Things 39 Things to Do 39 3. Py Filling: Lists, Tuples, Dictionaries, and Sets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 Lists and Tuples 41 Lists 42 Create with [] or list() 42 Convert Other Data Types to Lists with list() 43 Get an Item by Using [ offset ] 43 Lists of Lists 44 Change an Item by [ offset ] 45 Get a Slice to Extract Items by Offset Range 45 Add an Item to the End with append() 46 Combine Lists by Using extend() or += 46 Add an Item by Offset with insert() 46 Delete an Item by Offset with del 47 Delete an Item by Value with remove() 47 Get an Item by Offset and Delete It by Using pop() 47 Find an Item’s Offset by Value with index() 48 Test for a Value with in 48 Count Occurrences of a Value by Using count() 49 Convert to a String with join() 49 Reorder Items with sort() 49 Get Length by Using len() 50 Assign with =, Copy with copy() 50 Tuples 52 Create a Tuple by Using () 52 Tuples versus Lists 53 Dictionaries 53 Create with {} 54 Convert by Using dict() 5

Bill Lubanovic has developed software with Unix since 1977, GUIs since 1981, databases since 1990, and the Web since 1993. In 1982, at a startup named Intran, he developed MetaForm, one of the first commercial GUIs (before the Mac or Windows), on one of the first graphic workstations. In the early 1990s, while at Northwest Airlines, he wrote a graphic yield management system that generated millions of dollars in revenue; established a presence for the company on the Internet; and wrote its first Internet marketing test. Later, he cofounded an ISP (Tela) in 1994, and a web development company (Mad Scheme) in 1999. Recently, he developed core services and distributed systems with a remote team for a Manhattan startup. Currently, he’s integrating OpenStack services for a supercomputer company. Bill enjoys life in Minnesota with his wonderful wife Mary, children Tom and Karin, and cats Inga, Chester, and Lucy.

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• 刚开始看，前面几章挺好

  来源：豆瓣 发布时间：2025-05-17 04:33:35

• 浏览完了电子版

  来源：豆瓣 发布时间：2025-05-17 04:33:35