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delegation using, OOP and Delegation: “Wrapper” Objects

delegation-based managers, Delegation-Based Managers Revisited

example, A First Example

interception of built-in attributes, Intercepting Built-in Operation Attributes

loops, avoiding in interception methods, Avoiding loops in attribute interception methods

__getattribute__, compared to, __getattr__ and __getattribute__ Compared

__getattribute__ method, __getattribute__ and Descriptors, Inserting Code to Run on Attribute Access, __getattr__ and __getattribute__, Delegation-Based Managers Revisited, Avoiding loops in attribute interception methods, A First Example, Computed Attributes, __getattr__ and __getattribute__ Compared, Intercepting Built-in Operation Attributes, Delegation-Based Managers Revisited

computed attributes, Computed Attributes

delegation-based managers, Delegation-Based Managers Revisited

example, A First Example

interception of built-in operation attributes, Intercepting Built-in Operation Attributes

loops, avoiding in attribute interception, Avoiding loops in attribute interception methods

__getattr__, compared to, __getattr__ and __getattribute__ Compared

__getitem__ method, Indexing and Slicing: __getitem__ and __setitem__, Index Iteration: __getitem__, Membership: __contains__, __iter__, and __getitem__

index iteration, Index Iteration: __getitem__

membership, Membership: __contains__, __iter__, and __getitem__

__gt__ method, Comparisons: __lt__, __gt__, and Others

__iadd__ method, Right-Side and In-Place Addition: __radd__ and __iadd__

__init__.py files, Package __init__.py Files

__init__ method, Classes Can Intercept Python Operators, Coding Constructors, Constructors and Expressions: __init__ and __sub__

__iter__ method, Iterator Objects: __iter__ and __next__, User-Defined Iterators, Membership: __contains__, __iter__, and __getitem__

design purpose, User-Defined Iterators

membership, Membership: __contains__, __iter__, and __getitem__

__len__ method, Boolean Tests: __bool__ and __len__

__lt__ method, Comparisons: __lt__, __gt__, and Others

__main__ attribute, Mixed Usage Modes: __name__ and __main__

__name__ attribute of modules and, Mixed Usage Modes: __name__ and __main__

__main__ module, Scope Rules

__metaclass__ variable (Python 2.6), Declaring Metaclasses

__name__ attribute, Mixed Usage Modes: __name__ and __main__, Unit Tests with __name__, Using Command-Line Arguments with __name__, Using Code Two Ways

command-line arguments with, Using Command-Line Arguments with __name__

unit tests, Unit Tests with __name__

__ne__ method, Comparisons: __lt__, __gt__, and Others

__next__ method, The Iteration Protocol: File Iterators, Iterator Objects: __iter__ and __next__

__radd__ method, Right-Side and In-Place Addition: __radd__ and __iadd__

__repr__ method, String Representation: __repr__ and __str__, Custom Print Displays

custom exception display using, Custom Print Displays

__set__ method, Common Operator Overloading Methods, Read-only descriptors

__setattr__ method, Attribute Reference: __getattr__ and __setattr__, Inserting Code to Run on Attribute Access, __getattr__ and __getattribute__

__setitem__ method, Intercepting Slices

__slots__ attribute, Listing attributes per object in class trees, Instance Slots, How Properties and Descriptors Relate, Using __dict__ and __slots__

descriptors and, How Properties and Descriptors Relate

__dict__ attribute and, Using __dict__ and __slots__

__str__ method, A Third Example, Providing Print Displays, String Representation: __repr__ and __str__, Custom Print Displays

custom exception display using, Custom Print Displays

overload method for printing objects, Providing Print Displays

__sub__ method, Constructors and Expressions: __init__ and __sub__

A

abs function, Other Built-in Numeric Tools

absolute imports, Relative Import Basics

abstract superclasses, Abstract Superclasses, Python 2.6 and 3.0 Abstract Superclasses, Python 2.6 and 3.0 Abstract Superclasses, Stream Processors Revisited

example,