mirror of https://github.com/home-assistant/core
24 lines
555 B
Python
24 lines
555 B
Python
"""Read only dictionary."""
|
|
from typing import Any, TypeVar
|
|
|
|
|
|
def _readonly(*args: Any, **kwargs: Any) -> Any:
|
|
"""Raise an exception when a read only dict is modified."""
|
|
raise RuntimeError("Cannot modify ReadOnlyDict")
|
|
|
|
|
|
_KT = TypeVar("_KT")
|
|
_VT = TypeVar("_VT")
|
|
|
|
|
|
class ReadOnlyDict(dict[_KT, _VT]):
|
|
"""Read only version of dict that is compatible with dict types."""
|
|
|
|
__setitem__ = _readonly
|
|
__delitem__ = _readonly
|
|
pop = _readonly
|
|
popitem = _readonly
|
|
clear = _readonly
|
|
update = _readonly
|
|
setdefault = _readonly
|