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# stdlib
from abc import abstractmethod
from typing import Any, TypeVar
# 3rd party
from domdf_python_tools.doctools import prettify_docstrings
from typing_extensions import Protocol, runtime_checkable
__all__ = ("HasLessThan", "HasGreaterThan", "Frobnicater")
@prettify_docstrings
class HasLessThan(Protocol):
"""
:class:`typing.Protocol` for classes that support the ``<`` operator.
"""
def __lt__(self, other) -> bool: ...
@prettify_docstrings
class HasGreaterThan(Protocol):
def __gt__(self, other) -> bool: ...
@runtime_checkable
class Frobnicater(Protocol):
def frobnicate(self, something) -> Any: ...
# From https://github.com/python/cpython/blob/main/Lib/typing.py
T_co = TypeVar("T_co", covariant=True) # Any type covariant containers.
@runtime_checkable
class SupportsAbs(Protocol[T_co]):
"""
An ABC with one abstract method __abs__ that is covariant in its return type.
"""
__slots__ = ()
@abstractmethod
def __abs__(self) -> T_co:
pass
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