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Table of Contents
- What’s New in “Dive Into Python 3”
- a.k.a. “the minus level”
- Installing Python
- Diving In
- Which Python Is Right For You?
- Installing on Microsoft Windows
- Installing on Mac OS X
- Installing on Ubuntu Linux
- Installing on Other Platforms
- Using The Python Shell
- Python Editors and IDEs
- Your First Python Program
- Diving In
- Declaring Functions
- Optional and Named Arguments
- Writing Readable Code
- Documentation Strings
- The
import
Search Path
- Everything Is An Object
- What’s An Object?
- Indenting Code
- Exceptions
- Catching Import Errors
- Unbound Variables
- Everything is Case-Sensitive
- Running Scripts
- Further Reading
- Native Datatypes
- Diving In
- Booleans
- Numbers
- Coercing Integers To Floats And Vice-Versa
- Common Numerical Operations
- Fractions
- Trigonometry
- Numbers In A Boolean Context
- Lists
- Creating A List
- Slicing A List
- Adding Items To A List
- Searching For Values In A List
- Removing Items From A List
- Removing Items From A List: Bonus Round
- Lists In A Boolean Context
- Tuples
- Tuples In A Boolean Context
- Assigning Multiple Values At Once
- Sets
- Creating A Set
- Modifying A Set
- Removing Items From A Set
- Common Set Operations
- Sets In A Boolean Context
- Dictionaries
- Creating A Dictionary
- Modifying A Dictionary
- Mixed-Value Dictionaries
- Dictionaries In A Boolean Context
None
None
In A Boolean Context
- Further Reading
- Comprehensions
- Diving In
- Working With Files And Directories
- The Current Working Directory
- Working With Filenames and Directory Names
- Listing Directories
- Getting File Metadata
- Constructing Absolute Pathnames
- List Comprehensions
- Dictionary Comprehensions
- Other Fun Stuff To Do With Dictionary Comprehensions
- Set Comprehensions
- Further Reading
- Strings
- Some Boring Stuff You Need To Understand Before You Can Dive In
- Unicode
- Diving In
- Formatting Strings
- Compound Field Names
- Format Specifiers
- Other Common String Methods
- Slicing A String
- Strings vs. Bytes
- Postscript: Character Encoding Of Python Source Code
- Further Reading
- Regular Expressions
- Diving In
- Case Study: Street Addresses
- Case Study: Roman Numerals
- Checking For Thousands
- Checking For Hundreds
- Using The
{n,m}
Syntax
- Checking For Tens And Ones
- Verbose Regular Expressions
- Case study: Parsing Phone Numbers
- Summary
- Closures & Generators
- Diving In
- I Know, Let’s Use Regular Expressions!
- A List Of Functions
- A List Of Patterns
- A File Of Patterns
- Generators
- A Fibonacci Generator
- A Plural Rule Generator
- Further Reading
- Classes & Iterators
- Diving In
- Defining Classes
- The
__init__()
Method
- Instantiating Classes
- Instance Variables
- A Fibonacci Iterator
- A Plural Rule Iterator
- Further Reading
- Advanced Iterators
- Diving In
- Finding all occurrences of a pattern
- Finding the unique items in a sequence
- Making assertions
- Generator expressions
- Calculating Permutations… The Lazy Way!
- Other Fun Stuff in the
itertools
Module
- A New Kind Of String Manipulation
- Evaluating Arbitrary Strings As Python Expressions
- Putting It All Together
- Further Reading
- Unit Testing
- (Not) Diving In
- A Single Question
- “Halt And Catch Fire”
- More Halting, More Fire
- And One More Thing…
- A Pleasing Symmetry
- More Bad Input
- Refactoring
- Diving In
- Handling Changing Requirements
- Refactoring
- Summary
- Files
- Diving In
- Reading From Text Files
- Character Encoding Rears Its Ugly Head
- Stream Objects
- Reading Data From A Text File
- Closing Files
- Closing Files Automatically
- Reading Data One Line At A Time
- Writing to Text Files
- Character Encoding Again
- Binary Files
- Stream Objects From Non-File Sources
- Handling Compressed Files
- Standard Input, Output, and Error
- Redirecting Standard Output
- Further Reading
- XML
- Diving In
- A 5-Minute Crash Course in XML
- The Structure Of An Atom Feed
- Parsing XML
- Elements Are Lists
- Attributes Are Dictonaries
- Searching For Nodes Within An XML Document
- Going Further With lxml
- Generating XML
- Parsing Broken XML
- Further Reading
- Serializing Python Objects
- Diving In
- A Quick Note About The Examples in This Chapter
- Saving Data to a Pickle File
- Loading Data from a Pickle File
- Pickling Without a File
- Bytes and Strings Rear Their Ugly Heads Again
- Debugging Pickle Files
- Serializing Python Objects to be Read by Other Languages
- Saving Data to a JSON File
- Mapping of Python Datatypes to JSON
- Serializing Datatypes Unsupported by JSON
- Loading Data from a JSON File
- Further Reading
- HTTP Web Services
- Diving In
- Features of HTTP
- Caching
- Last-Modified Checking
- ETag Checking
- Compression
- Redirects
- How Not To Fetch Data Over HTTP
- What’s On The Wire?
- Introducing
httplib2
- A Short Digression To Explain Why
httplib2
Returns Bytes Instead of Strings
- How
httplib2
Handles Caching
- How
httplib2
Handles Last-Modified
and ETag
Headers
- How
http2lib
Handles Compression
- How
httplib2
Handles Redirects
- Beyond HTTP GET
- Beyond HTTP POST
- Further Reading
- Case Study: Porting
chardet
to Python 3
- Diving In
- What is Character Encoding Auto-Detection?
- Isn’t That Impossible?
- Does Such An Algorithm Exist?
- Introducing The
chardet
Module
- UTF-n With A BOM
- Escaped Encodings
- Multi-Byte Encodings
- Single-Byte Encodings
windows-1252
- Running
2to3
- A Short Digression Into Multi-File Modules
- Fixing What
2to3
Can’t
False
is invalid syntax
- No module named
constants
- Name 'file' is not defined
- Can’t use a string pattern on a bytes-like object
- Can't convert
'bytes'
object to str
implicitly
- Unsupported operand type(s) for +:
'int'
and 'bytes'
ord()
expected string of length 1, but int
found
- Unorderable types:
int()
>= str()
- Global name
'reduce'
is not defined
- Summary
- Packaging Python Libraries
- Diving In
- Things Distutils Can’t Do For You
- Directory Structure
- Writing Your Setup Script
- Classifying Your Package
- Examples of Good Package Classifiers
- Specifying Additional Files With A Manifest
- Checking Your Setup Script for Errors
- Creating a Source Distribution
- Creating a Graphical Installer
- Building Installable Packages for Other Operating Systems
- Adding Your Software to The Python Package Index
- The Many Possible Futures of Python Packaging
- Further Reading
- Porting Code to Python 3 with
2to3
- Diving In
print
statement
- Unicode string literals
unicode()
global function
long
data type
- <> comparison
has_key()
dictionary method
- Dictionary methods that return lists
- Modules that have been renamed or reorganized
http
urllib
dbm
xmlrpc
- Other modules
- Relative imports within a package
next()
iterator method
filter()
global function
map()
global function
reduce()
global function
apply()
global function
intern()
global function
exec
statement
execfile
statement
repr
literals (backticks)
try...except
statement
raise
statement
throw
method on generators
xrange()
global function
raw_input()
and input()
global functions
func_*
function attributes
xreadlines()
I/O method
lambda
functions that take a tuple instead of multiple parameters
- Special method attributes
__nonzero__
special method
- Octal literals
sys.maxint
callable()
global function
zip()
global function
StandardError
exception
types
module constants
isinstance()
global function
basestring
datatype
itertools
module
sys.exc_type
, sys.exc_value
, sys.exc_traceback
- List comprehensions over tuples
os.getcwdu()
function
- Metaclasses
- Matters of style
set()
literals (explicit)
buffer()
global function (explicit)
- Whitespace around commas (explicit)
- Common idioms (explicit)
- Special Method Names
- Diving In
- Basics
- Classes That Act Like Iterators
- Computed Attributes
- Classes That Act Like Functions
- Classes That Act Like Sequences
- Classes That Act Like Dictionaries
- Classes That Act Like Numbers
- Classes That Can Be Compared
- Classes That Can Be Serialized
- Classes That Can Be Used in a
with
Block
- Really Esoteric Stuff
- Further Reading
- Where to Go From Here
- Things to Read
- Where To Look For Python 3-Compatible Code
© 2001–10 Mark Pilgrim