V

validating, Example: Attribute Validations–Using __getattribute__ to Validate, Should operator methods be validated?, Example: Validating Function Arguments–Other Applications: Type Testing (If You Insist!)

attributes, Example: Attribute Validations–Using __getattribute__ to Validate

function arguments, Example: Validating Function Arguments–Other Applications: Type Testing (If You Insist!)

operator overloading methods, Should operator methods be validated?

value equality operators, Python Expression Operators

van Rossum, Guido, It’s Free

varargs, Argument Matching Basics, Applying functions generically–Applying functions generically

variables, Running Code Interactively, The Grander Module Story: Attributes, Modules and namespaces, Sequence Operations, Sequence Operations, Variables and Basic Expressions–Variables and Basic Expressions, Variables, Objects, and References–Types Live with Objects, Not Variables, Variables, Objects, and References, Variables, Objects, and References, Variables, Objects, and References, Variables, Objects, and References, Variables, Objects, and References, Types Live with Objects, Not Variables, Shared References–Shared References and Equality, Variable Name Rules–Names have no type, but objects do, Local Variables, Python Scope Basics, Other Python scopes: Preview, Other Python scopes: Preview, Program Design: Minimize Global Variables, Other Ways to Access Globals, Scopes and Comprehension Variables, Enclosing scopes and loop variables: Factory functions, Module Design Concepts, from * Can Obscure the Meaning of Variables, Scopes and try except Variables

about, Variables, Objects, and References

assigning values to, Running Code Interactively, Sequence Operations, Variables, Objects, and References, Types Live with Objects, Not Variables

attributes and, The Grander Module Story: Attributes

comprehension, Other Python scopes: Preview, Scopes and Comprehension Variables

creating, Sequence Operations, Variables, Objects, and References

dynamic typing and, Variables, Objects, and References–Types Live with Objects, Not Variables

exception, Other Python scopes: Preview

expressions and, Variables, Objects, and References

from * statement and, from * Can Obscure the Meaning of Variables

function-related gotchas, Enclosing scopes and loop variables: Factory functions

global, Program Design: Minimize Global Variables, Other Ways to Access Globals, Module Design Concepts

local, Local Variables

name collisions and, Modules and namespaces

name rules for, Variable Name Rules–Names have no type, but objects do

numbers in, Variables and Basic Expressions–Variables and Basic Expressions

objects and, Variables, Objects, and References

scope of, Python Scope Basics

shared references and, Shared References–Shared References and Equality

try/except statement and, Scopes and try except Variables

version considerations for Python, The Python 2.X and 3.X Lines–Which Python Should I Use?, Python Expression Operators, Division: Classic, Floor, and True–Supporting either Python, Other Built-in Numeric Tools, Set basics in Python 2.6 and earlier–Set comprehensions in Python 3.X and 2.7, Unicode: The Short Story, Escape Sequences Represent Special Characters, The Original string Module’s Functions (Gone in 3.X)–The Original string Module’s Functions (Gone in 3.X), Comparison to the % Formatting Expression, More on sorting lists, Dictionary Changes in Python 3.X and 2.7–The has_key method is dead in 3.X: Long live in!, Text and Binary Files: The Short Story, Python 2.X and 3.X mixed-type comparisons and sorts, Python 2.X and 3.X dictionary comparisons, Python’s Statements, The Python 3.X print Function–The 2.X print statement in action, map equivalence in Python 2.X, The Iteration Protocol: File Iterators, New Iterables in Python 3.X–Dictionary View Iterables, PyDoc: HTML Reports–Python 3.2 and earlier: GUI client, Redefining built-in names: For better or worse, Program Design: Minimize Global Variables, The nonlocal Statement in 3.X–Boundary cases, State with Function Attributes: 3.X and 2.X–State with mutables: Obscure ghost of Pythons past?, Python 3.X Keyword-Only Arguments–Why keyword-only arguments?, Emulating the Python 3.X print Function–Using Keyword-Only Arguments, Iteration protocol integration, Changes in Python 3.X, The relative imports solution in 3.X, Using Code Two Ways, Abstract superclasses in Python 3.X and 2.6+: Preview, Iterable Objects: __iter__ and __next__, Boolean Methods in Python 2.X, OOP and Delegation: “Wrapper” Proxy Objects, Unbound Methods Are Functions in 3.X, Listing attributes per object in class trees, The “New Style” Class Model, Static Methods in 2.X and 3.X–Static Methods in 2.X and 3.X, Use differs in Python 2.X: Verbose calls, The raise Statement, Multiple Context Managers in 3.1, 2.7, and Later–Multiple Context Managers in 3.1, 2.7, and Later, Exception Objects, Unicode and Byte Strings–String Changes in 3.X, How Python Stores Strings in Memory, Text and Binary Modes in 2.X and 3.X, Unicode Files in 2.X, Declaration in 3.X–Metaclass Dispatch in Both 3.X and 2.X, Python Changes and This Book–Earlier and Later Python Changes

about, The Python 2.X and 3.X Lines–Which Python Should I Use?

abstract superclasses, Abstract superclasses in Python 3.X and 2.6+: Preview

Booleans, Boolean Methods in Python 2.X

builtins module, Other Built-in Numeric Tools, Redefining built-in names: For better or worse

classes, The “New Style” Class Model

comparisons and sorts, More on sorting lists, Python 2.X and 3.X mixed-type comparisons and sorts

context managers, Multiple Context Managers in 3.1, 2.7, and Later–Multiple Context Managers in 3.1, 2.7, and Later

dictionaries, Dictionary Changes in Python 3.X and 2.7–The has_key method is dead in 3.X: Long live in!, Python 2.X and 3.X dictionary comparisons

division operations, Division: Classic, Floor, and True–Supporting either Python

exception classes, Exception Objects

expression operators, Python Expression Operators

files, Text and Binary Files: The Short Story, Text and Binary Modes in 2.X and 3.X

function attributes, State with Function Attributes: 3.X and 2.X–State with mutables: Obscure ghost of Pythons past?

iteration, The Iteration Protocol: File Iterators, New Iterables in Python 3.X–Dictionary View Iterables, Iterable Objects: __iter__ and __next__

keyword arguments, Python 3.X Keyword-Only Arguments–Why keyword-only arguments?

map built-in function, map equivalence in Python 2.X

metaclasses, Declaration in 3.X–Metaclass Dispatch in Both 3.X and 2.X

next method, Iteration protocol integration

nonlocal statement, The nonlocal Statement in 3.X–Boundary cases

package imports, Changes in Python 3.X

printing, The Python 3.X print Function–The 2.X print statement in action, Emulating the Python 3.X print Function–Using Keyword-Only Arguments, Using Code Two Ways

PyDoc system, PyDoc: HTML Reports–Python 3.2 and earlier: GUI client

raise statement, The raise Statement

relative imports model, The relative imports solution in 3.X

sets, Set basics in Python 2.6 and earlier–Set comprehensions in Python 3.X and 2.7

statements, Python’s Statements

static methods, Static Methods in 2.X and 3.X–Static Methods in 2.X and 3.X

storing strings in memory, How Python Stores Strings in Memory

strings, Unicode: The Short Story, Escape Sequences Represent Special Characters, The Original string Module’s Functions (Gone in 3.X)–The Original string Module’s Functions (Gone in 3.X), Comparison to the % Formatting Expression, Listing attributes per object in class trees, Unicode and Byte Strings–String Changes in 3.X, Unicode Files in 2.X

summarized, Python Changes and This Book–Earlier and Later Python Changes

super built-in function, Use differs in Python 2.X: Verbose calls

threading, Program Design: Minimize Global Variables

unbound methods, Unbound Methods Are Functions in 3.X

wrapper classes, OOP and Delegation: “Wrapper” Proxy Objects

view objects, Dictionary views in 3.X (and 2.7 via new methods)–Dictionary views and sets, Dictionary View Iterables–Dictionary View Iterables

virtual attributes, Handling slots and other “virtual” attributes generically–Handling slots and other “virtual” attributes generically

virtual concatenation, Namespace Packages in Action