Python generic class definitions

E265439

Python generic class definitions are type-parameterized class constructs that enable writing reusable, type-safe classes using Python’s static type system.

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All labels observed (1)

Label Occurrences
Python generic class definitions canonical 1

Statements (49)

Predicate Object
instanceOf programming language feature
type system construct
allows parameterization over types
canBe combined with inheritance
nested
specialized with concrete types at use sites
checkedBy PyCharm
surface form: PyCharm type checker

Pyre
mypy
pyright
compatibleSinceVersion Python 3.x
surface form: Python 3.5
doesNotAffect runtime semantics by default
enables reusable class definitions
type-safe class design
exampleWithPEP695 class Box[T]: ...
formalizedIn PEP 560
PEP 695
goal catch type errors at development time
reduce code duplication
hasAlternativeSyntax PEP 695 type parameter list
improves IDE autocompletion
code readability
static type checking precision
interpretedBy static type checkers rather than Python runtime
introducedIn PEP 484
oftenUses typing.Generic
typing.ParamSpec
typing.Protocol
typing.TypeVar
typing.TypeVarTuple
partOf PEP 484
surface form: Python static type system
relatedTo Python generics
generic functions in Python
typing.Annotated
typing.Self
requires typing module
supports bounded type variables
constraints on type variables
generic base classes
generic methods
recursive type references
type parameters
variance annotations
syntaxExample T = TypeVar('T')
class Box(Generic[T]): ...
usedFor APIs with type parameters
collections
data containers
usedInLanguage Python

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Subject: Python generic class definitions
Description of subject: Python generic class definitions are type-parameterized class constructs that enable writing reusable, type-safe classes using Python’s static type system.

Referenced by (1)

Full triples — surface form annotated when it differs from this entity's canonical label.

PEP 695 affects Python generic class definitions