更新时间：2021-06-10 18:27:33
coverpage
Title Page
About Packt
Why subscribe?
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Contributors
About the authors
About the reviewers
Packt is searching for authors like you
Preface
Who this book is for
What this book covers
To get the most out of this book
Download the example code files
Conventions used
Get in touch
Reviews
A Gentle Introduction to Python
A proper introduction
Enter the Python
About Python
Portability
Coherence
Developer productivity
An extensive library
Software quality
Software integration
Satisfaction and enjoyment
What are the drawbacks?
Who is using Python today?
Setting up the environment
Python 2 versus Python 3
Installing Python
Setting up the Python interpreter
About virtualenv
Your first virtual environment
Your friend the console
How you can run a Python program
Running Python scripts
Running the Python interactive shell
Running Python as a service
Running Python as a GUI application
How is Python code organized?
How do we use modules and packages?
Python's execution model
Names and namespaces
Scopes
Objects and classes
Guidelines on how to write good code
The Python culture
A note on IDEs
Summary
Built-in Data Types
Everything is an object
Mutable or immutable? That is the question
Numbers
Integers
Booleans
Real numbers
Complex numbers
Fractions and decimals
Immutable sequences
Strings and bytes
Encoding and decoding strings
Indexing and slicing strings
String formatting
Tuples
Mutable sequences
Lists
Byte arrays
Set types
Mapping types – dictionaries
The collections module
namedtuple
defaultdict
ChainMap
Enums
Final considerations
Small values caching
How to choose data structures
About indexing and slicing
About the names
Iterating and Making Decisions
Conditional programming
A specialized else – elif
The ternary operator
Looping
The for loop
Iterating over a range
Iterating over a sequence
Iterators and iterables
Iterating over multiple sequences
The while loop
The break and continue statements
A special else clause
Putting all this together
A prime generator
Applying discounts
A quick peek at the itertools module
