Think Python. How to Think Like a Computer Scientist. 2nd Edition - Helion

ebook

Autor: Allen B. Downey
ISBN: 978-14-919-3941-3
stron: 292, Format: ebook
Data wydania: 2015-12-02
Księgarnia: Helion

Cena książki: 143,65 zł (poprzednio: 167,03 zł)
Oszczędzasz: 14% (-23,38 zł)

Osoby, które kupiły tę książkę, wybierały także »

If you want to learn how to program, working with Python is an excellent way to start. This hands-on guide takes you through the language a step at a time, beginning with basic programming concepts before moving on to functions, recursion, data structures, and object-oriented design. This second edition and its supporting code have been updated for Python 3.

Through exercises in each chapter, you’ll try out programming concepts as you learn them. Think Python is ideal for students at the high school or college level, as well as self-learners, home-schooled students, and professionals who need to learn programming basics. Beginners just getting their feet wet will learn how to start with Python in a browser.

Start with the basics, including language syntax and semantics
Get a clear definition of each programming concept
Learn about values, variables, statements, functions, and data structures in a logical progression
Discover how to work with files and databases
Understand objects, methods, and object-oriented programming
Use debugging techniques to fix syntax, runtime, and semantic errors
Explore interface design, data structures, and GUI-based programs through case studies

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Spis treści

Think Python. 2nd Edition eBook -- spis treści

Preface
- The Strange History of This Book
- Conventions Used in This Book
- Using Code Examples
- Safari Books Online
- How to Contact Us
- Acknowledgments
- Contributor List
1. The Way of the Program
- What Is a Program?
- Running Python
- The First Program
- Arithmetic Operators
- Values and Types
- Formal and Natural Languages
- Debugging
- Glossary
- Exercises
2. Variables, Expressions and Statements
- Assignment Statements
- Variable Names
- Expressions and Statements
- Script Mode
- Order of Operations
- String Operations
- Comments
- Debugging
- Glossary
- Exercises
3. Functions
- Function Calls
- Math Functions
- Composition
- Adding New Functions
- Definitions and Uses
- Flow of Execution
- Parameters and Arguments
- Variables and Parameters Are Local
- Stack Diagrams
- Fruitful Functions and Void Functions
- Why Functions?
- Debugging
- Glossary
- Exercises
4. Case Study: Interface Design
- The turtle Module
- Simple Repetition
- Exercises
- Encapsulation
- Generalization
- Interface Design
- Refactoring
- A Development Plan
- docstring
- Debugging
- Glossary
- Exercises
5. Conditionals and Recursion
- Floor Division and Modulus
- Boolean Expressions
- Logical Operators
- Conditional Execution
- Alternative Execution
- Chained Conditionals
- Nested Conditionals
- Recursion
- Stack Diagrams for Recursive Functions
- Infinite Recursion
- Keyboard Input
- Debugging
- Glossary
- Exercises
6. Fruitful Functions
- Return Values
- Incremental Development
- Composition
- Boolean Functions
- More Recursion
- Leap of Faith
- One More Example
- Checking Types
- Debugging
- Glossary
- Exercises
7. Iteration
- Reassignment
- Updating Variables
- The while Statement
- break
- Square Roots
- Algorithms
- Debugging
- Glossary
- Exercises
8. Strings
- A String Is a Sequence
- len
- Traversal with a for Loop
- String Slices
- Strings Are Immutable
- Searching
- Looping and Counting
- String Methods
- The in Operator
- String Comparison
- Debugging
- Glossary
- Exercises
9. Case Study: Word Play
- Reading Word Lists
- Exercises
- Search
- Looping with Indices
- Debugging
- Glossary
- Exercises
10. Lists
- A List Is a Sequence
- Lists Are Mutable
- Traversing a List
- List Operations
- List Slices
- List Methods
- Map, Filter and Reduce
- Deleting Elements
- Lists and Strings
- Objects and Values
- Aliasing
- List Arguments
- Debugging
- Glossary
- Exercises
11. Dictionaries
- A Dictionary Is a Mapping
- Dictionary as a Collection of Counters
- Looping and Dictionaries
- Reverse Lookup
- Dictionaries and Lists
- Memos
- Global Variables
- Debugging
- Glossary
- Exercises
12. Tuples
- Tuples Are Immutable
- Tuple Assignment
- Tuples as Return Values
- Variable-Length Argument Tuples
- Lists and Tuples
- Dictionaries and Tuples
- Sequences of Sequences
- Debugging
- Glossary
- Exercises
13. Case Study: Data Structure Selection
- Word Frequency Analysis
- Random Numbers
- Word Histogram
- Most Common Words
- Optional Parameters
- Dictionary Subtraction
- Random Words
- Markov Analysis
- Data Structures
- Debugging
- Glossary
- Exercises
14. Files
- Persistence
- Reading and Writing
- Format Operator
- Filenames and Paths
- Catching Exceptions
- Databases
- Pickling
- Pipes
- Writing Modules
- Debugging
- Glossary
- Exercises
15. Classes and Objects
- Programmer-Defined Types
- Attributes
- Rectangles
- Instances as Return Values
- Objects Are Mutable
- Copying
- Debugging
- Glossary
- Exercises
16. Classes and Functions
- Time
- Pure Functions
- Modifiers
- Prototyping versus Planning
- Debugging
- Glossary
- Exercises
17. Classes and Methods
- Object-Oriented Features
- Printing Objects
- Another Example
- A More Complicated Example
- The init Method
- The __str__ Method
- Operator Overloading
- Type-Based Dispatch
- Polymorphism
- Interface and Implementation
- Debugging
- Glossary
- Exercises
18. Inheritance
- Card Objects
- Class Attributes
- Comparing Cards
- Decks
- Printing the Deck
- Add, Remove, Shuffle and Sort
- Inheritance
- Class Diagrams
- Data Encapsulation
- Debugging
- Glossary
- Exercises
19. The Goodies
- Conditional Expressions
- List Comprehensions
- Generator Expressions
- any and all
- Sets
- Counters
- defaultdict
- Named Tuples
- Gathering Keyword Args
- Glossary
- Exercises
20. Debugging
- Syntax Errors
  - I keep making changes and it makes no difference.
- Runtime Errors
  - My program does absolutely nothing.
  - My program hangs.
    - Infinite loop
    - Infinite recursion
    - Flow of execution
  - When I run the program I get an exception.
  - I added so many print statements I get inundated with output.
- Semantic Errors
  - My program doesnt work.
  - Ive got a big hairy expression and it doesnt do what I expect.
  - Ive got a function that doesnt return what I expect.
  - Im really, really stuck and I need help.
  - No, I really need help.
21. Analysis of Algorithms
- Order of Growth
- Analysis of Basic Python Operations
- Analysis of Search Algorithms
- Hashtables
- Glossary
Index