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TypedAppFactoryProtocol

Bases: Protocol, Generic[CreateParamsT, UpdateParamsT, DeleteParamsT]

Base class for protocol classes.

Protocol classes are defined as:

class Proto(Protocol):
def meth(self) -> int:
...

Such classes are primarily used with static type checkers that recognize structural subtyping (static duck-typing).

For example:

class C:
def meth(self) -> int:
return 0
def func(x: Proto) -> int:
return x.meth()
func(C()) # Passes static type check

See PEP 544 for details. Protocol classes decorated with @typing.runtime_checkable act as simple-minded runtime protocols that check only the presence of given attributes, ignoring their type signatures. Protocol classes can be generic, they are defined as:

class GenProto[T](Protocol):
def meth(self) -> T:
...