Files
2025-10-19 18:29:10 +02:00

589 lines
27 KiB
Python

"""
Collection and container types.
MicroPython module: https://docs.micropython.org/en/v1.26.0/library/collections.html
CPython module: :mod:`python:collections` https://docs.python.org/3/library/collections.html .
This module implements advanced collection and container types to
hold/accumulate various objects.
"""
from __future__ import annotations
import sys
from _collections_abc import dict_items, dict_keys, dict_values
from _typeshed import Incomplete, SupportsItems, SupportsKeysAndGetItem, SupportsRichComparison, SupportsRichComparisonT
from typing import Dict, Any, Generic, NoReturn, SupportsIndex, TypeVar, final, overload
from typing_extensions import Awaitable, TypeAlias, TypeVar, Self
from collections.abc import Iterable
if sys.version_info >= (3, 9):
from types import GenericAlias
if sys.version_info >= (3, 10):
from collections.abc import (
Callable,
ItemsView,
Iterable,
Iterator,
KeysView,
Mapping,
MutableMapping,
MutableSequence,
Sequence,
ValuesView,
)
else:
from _collections_abc import *
__all__ = ["OrderedDict", "defaultdict", "deque", "namedtuple"]
_S = TypeVar("_S")
_T = TypeVar("_T")
_T1 = TypeVar("_T1")
_T2 = TypeVar("_T2")
_KT = TypeVar("_KT")
_VT = TypeVar("_VT")
_KT_co = TypeVar("_KT_co", covariant=True)
_VT_co = TypeVar("_VT_co", covariant=True)
# namedtuple is special-cased in the type checker; the initializer is ignored.
def namedtuple(name: str, fields: str | Iterable[str]) -> type[tuple[Any, ...]]:
"""
This is factory function to create a new namedtuple type with a specific
name and set of fields. A namedtuple is a subclass of tuple which allows
to access its fields not just by numeric index, but also with an attribute
access syntax using symbolic field names. Fields is a sequence of strings
specifying field names. For compatibility with CPython it can also be a
a string with space-separated field named (but this is less efficient).
Example of use::
from collections import namedtuple
MyTuple = namedtuple("MyTuple", ("id", "name"))
t1 = MyTuple(1, "foo")
t2 = MyTuple(2, "bar")
print(t1.name)
assert t2.name == t2[1]
"""
...
class UserDict(MutableMapping[_KT, _VT]): # type: ignore
data: dict[_KT, _VT] # type: ignore
# __init__ should be kept roughly in line with `dict.__init__`, which has the same semantics
@overload
def __init__(self, dict: None = None, /) -> None: ...
@overload
def __init__(
self: UserDict[str, _VT], dict: None = None, /, **kwargs: _VT # pyright: ignore[reportInvalidTypeVarUse] #11780
) -> None: ...
@overload
def __init__(self, dict: SupportsKeysAndGetItem[_KT, _VT], /) -> None: ... # type: ignore
@overload
def __init__(
self: UserDict[str, _VT], # pyright: ignore[reportInvalidTypeVarUse] #11780
dict: SupportsKeysAndGetItem[str, _VT],
/,
**kwargs: _VT, # type: ignore
) -> None: ...
@overload
def __init__(self, iterable: Iterable[tuple[_KT, _VT]], /) -> None: ... # type: ignore
@overload
def __init__(
self: UserDict[str, _VT], # pyright: ignore[reportInvalidTypeVarUse] #11780
iterable: Iterable[tuple[str, _VT]],
/,
**kwargs: _VT, # type: ignore
) -> None: ...
@overload
def __init__(self: UserDict[str, str], iterable: Iterable[list[str]], /) -> None: ...
@overload
def __init__(self: UserDict[bytes, bytes], iterable: Iterable[list[bytes]], /) -> None: ...
def __len__(self) -> int: ...
def __getitem__(self, key: _KT) -> _VT: ... # type: ignore
def __setitem__(self, key: _KT, item: _VT) -> None: ... # type: ignore
def __delitem__(self, key: _KT) -> None: ...
def __iter__(self) -> Iterator[_KT]: ... # type: ignore
def __contains__(self, key: object) -> bool: ...
def copy(self) -> Self: ...
def __copy__(self) -> Self: ...
# `UserDict.fromkeys` has the same semantics as `dict.fromkeys`, so should be kept in line with `dict.fromkeys`.
# TODO: Much like `dict.fromkeys`, the true signature of `UserDict.fromkeys` is inexpressible in the current type system.
# See #3800 & https://github.com/python/typing/issues/548#issuecomment-683336963.
@classmethod
@overload
def fromkeys(cls, iterable: Iterable[_T], value: None = None) -> UserDict[_T, Any | None]: ...
@classmethod
@overload
def fromkeys(cls, iterable: Iterable[_T], value: _S) -> UserDict[_T, _S]: ...
if sys.version_info >= (3, 9):
@overload
def __or__(self, other: UserDict[_KT, _VT] | dict[_KT, _VT]) -> Self: ... # type: ignore
@overload
def __or__(self, other: UserDict[_T1, _T2] | dict[_T1, _T2]) -> UserDict[_KT | _T1, _VT | _T2]: ...
@overload
def __ror__(self, other: UserDict[_KT, _VT] | dict[_KT, _VT]) -> Self: ... # type: ignore
@overload
def __ror__(self, other: UserDict[_T1, _T2] | dict[_T1, _T2]) -> UserDict[_KT | _T1, _VT | _T2]: ...
# UserDict.__ior__ should be kept roughly in line with MutableMapping.update()
@overload # type: ignore[misc]
def __ior__(self, other: SupportsKeysAndGetItem[_KT, _VT]) -> Self: ... # type: ignore
@overload
def __ior__(self, other: Iterable[tuple[_KT, _VT]]) -> Self: ... # type: ignore
if sys.version_info >= (3, 12):
@overload
def get(self, key: _KT, default: None = None) -> _VT | None: ... # type: ignore
@overload
def get(self, key: _KT, default: _T) -> _VT | _T: ... # type: ignore
class UserList(MutableSequence[_T]):
data: list[_T]
@overload
def __init__(self, initlist: None = None) -> None: ...
@overload
def __init__(self, initlist: Iterable[_T]) -> None: ...
def __lt__(self, other: list[_T] | UserList[_T]) -> bool: ...
def __le__(self, other: list[_T] | UserList[_T]) -> bool: ...
def __gt__(self, other: list[_T] | UserList[_T]) -> bool: ...
def __ge__(self, other: list[_T] | UserList[_T]) -> bool: ...
def __eq__(self, other: object) -> bool: ...
def __contains__(self, item: object) -> bool: ...
def __len__(self) -> int: ...
@overload
def __getitem__(self, i: SupportsIndex) -> _T: ... # type: ignore
@overload
def __getitem__(self, i: slice) -> Self: ...
@overload
def __setitem__(self, i: SupportsIndex, item: _T) -> None: ...
@overload
def __setitem__(self, i: slice, item: Iterable[_T]) -> None: ...
def __delitem__(self, i: SupportsIndex | slice) -> None: ...
def __add__(self, other: Iterable[_T]) -> Self: ...
def __radd__(self, other: Iterable[_T]) -> Self: ...
def __iadd__(self, other: Iterable[_T]) -> Self: ...
def __mul__(self, n: int) -> Self: ...
def __rmul__(self, n: int) -> Self: ...
def __imul__(self, n: int) -> Self: ...
def append(self, item: _T) -> None: ...
def insert(self, i: int, item: _T) -> None: ...
def pop(self, i: int = -1) -> _T: ... # type: ignore
def remove(self, item: _T) -> None: ...
def copy(self) -> Self: ...
def __copy__(self) -> Self: ...
def count(self, item: _T) -> int: ...
# The runtime signature is "item, *args", and the arguments are then passed
# to `list.index`. In order to give more precise types, we pretend that the
# `item` argument is positional-only.
def index(self, item: _T, start: SupportsIndex = 0, stop: SupportsIndex = sys.maxsize, /) -> int: ... # type: ignore
# All arguments are passed to `list.sort` at runtime, so the signature should be kept in line with `list.sort`.
@overload
def sort(self: UserList[SupportsRichComparisonT], *, key: None = None, reverse: bool = False) -> None: ...
@overload
def sort(self, *, key: Callable[[_T], SupportsRichComparison], reverse: bool = False) -> None: ...
def extend(self, other: Iterable[_T]) -> None: ...
class UserString(Sequence[UserString]):
data: str
def __init__(self, seq: object) -> None: ...
def __int__(self) -> int: ...
def __float__(self) -> float: ...
def __complex__(self) -> complex: ...
def __getnewargs__(self) -> tuple[str]: ...
def __lt__(self, string: str | UserString) -> bool: ...
def __le__(self, string: str | UserString) -> bool: ...
def __gt__(self, string: str | UserString) -> bool: ...
def __ge__(self, string: str | UserString) -> bool: ...
def __eq__(self, string: object) -> bool: ...
def __hash__(self) -> int: ...
def __contains__(self, char: object) -> bool: ...
def __len__(self) -> int: ...
def __getitem__(self, index: SupportsIndex | slice) -> Self: ...
def __iter__(self) -> Iterator[Self]: ...
def __reversed__(self) -> Iterator[Self]: ...
def __add__(self, other: object) -> Self: ...
def __radd__(self, other: object) -> Self: ...
def __mul__(self, n: int) -> Self: ...
def __rmul__(self, n: int) -> Self: ...
def __mod__(self, args: Any) -> Self: ...
def __rmod__(self, template: object) -> Self: ...
def capitalize(self) -> Self: ...
def casefold(self) -> Self: ...
def center(self, width: int, *args: Any) -> Self: ...
def count(self, sub: str | UserString, start: int = 0, end: int = sys.maxsize) -> int: ...
def encode(self: UserString, encoding: str | None = "utf-8", errors: str | None = "strict") -> bytes: ...
def endswith(self, suffix: str | tuple[str, ...], start: int | None = 0, end: int | None = sys.maxsize) -> bool: ...
def expandtabs(self, tabsize: int = 8) -> Self: ...
def find(self, sub: str | UserString, start: int = 0, end: int = sys.maxsize) -> int: ...
def format(self, *args: Any, **kwds: Any) -> str: ...
def format_map(self, mapping: Mapping[str, Any]) -> str: ...
def index(self, sub: str, start: int = 0, end: int = sys.maxsize) -> int: ...
def isalpha(self) -> bool: ...
def isalnum(self) -> bool: ...
def isdecimal(self) -> bool: ...
def isdigit(self) -> bool: ...
def isidentifier(self) -> bool: ...
def islower(self) -> bool: ...
def isnumeric(self) -> bool: ...
def isprintable(self) -> bool: ...
def isspace(self) -> bool: ...
def istitle(self) -> bool: ...
def isupper(self) -> bool: ...
def isascii(self) -> bool: ...
def join(self, seq: Iterable[str]) -> str: ...
def ljust(self, width: int, *args: Any) -> Self: ...
def lower(self) -> Self: ...
def lstrip(self, chars: str | None = None) -> Self: ...
maketrans = str.maketrans
def partition(self, sep: str) -> tuple[str, str, str]: ...
if sys.version_info >= (3, 9):
def removeprefix(self, prefix: str | UserString, /) -> Self: ...
def removesuffix(self, suffix: str | UserString, /) -> Self: ...
def replace(self, old: str | UserString, new: str | UserString, maxsplit: int = -1) -> Self: ...
def rfind(self, sub: str | UserString, start: int = 0, end: int = sys.maxsize) -> int: ...
def rindex(self, sub: str | UserString, start: int = 0, end: int = sys.maxsize) -> int: ...
def rjust(self, width: int, *args: Any) -> Self: ...
def rpartition(self, sep: str) -> tuple[str, str, str]: ...
def rstrip(self, chars: str | None = None) -> Self: ...
def split(self, sep: str | None = None, maxsplit: int = -1) -> list[str]: ...
def rsplit(self, sep: str | None = None, maxsplit: int = -1) -> list[str]: ...
def splitlines(self, keepends: bool = False) -> list[str]: ...
def startswith(self, prefix: str | tuple[str, ...], start: int | None = 0, end: int | None = sys.maxsize) -> bool: ...
def strip(self, chars: str | None = None) -> Self: ...
def swapcase(self) -> Self: ...
def title(self) -> Self: ...
def translate(self, *args: Any) -> Self: ...
def upper(self) -> Self: ...
def zfill(self, width: int) -> Self: ...
class deque:
"""
Minimal implementation of a deque that implements a FIFO buffer.
"""
@property
def maxlen(self) -> int | None: ...
@overload
def __init__(self, *, maxlen: int | None = None) -> None: ...
@overload
def __init__(self, iterable: Iterable[_T], maxlen: int | None = None) -> None: ...
def append(self, x: _T, /) -> None: # type: ignore
"""
Add *x* to the right side of the deque.
Raises ``IndexError`` if overflow checking is enabled and there is
no more room in the queue.
"""
...
def appendleft(self, x: _T, /) -> None: # type: ignore
"""
Add *x* to the left side of the deque.
Raises ``IndexError`` if overflow checking is enabled and there is
no more room in the queue.
"""
...
def copy(self) -> Self: ...
def count(self, x: _T, /) -> int: ... # type: ignore
def extend(self, iterable: Iterable[_T], /) -> None:
"""
Extend the deque by appending all the items from *iterable* to
the right of the deque.
Raises ``IndexError`` if overflow checking is enabled and there is
no more room in the deque.
"""
...
def extendleft(self, iterable: Iterable[_T], /) -> None: ...
def insert(self, i: int, x: _T, /) -> None: ... # type: ignore
def index(self, x: _T, start: int = 0, stop: int = ..., /) -> int: ... # type: ignore
def pop(self) -> _T: # type: ignore
"""
Remove and return an item from the right side of the deque.
Raises ``IndexError`` if no items are present.
"""
...
def popleft(self) -> _T: # type: ignore
"""
Remove and return an item from the left side of the deque.
Raises ``IndexError`` if no items are present.
"""
...
def remove(self, value: _T, /) -> None: ... # type: ignore
def rotate(self, n: int = 1, /) -> None: ...
def __copy__(self) -> Self: ...
def __len__(self) -> int: ...
# These methods of deque don't take slices, unlike MutableSequence, hence the type: ignores
def __getitem__(self, key: SupportsIndex, /) -> _T: ... # type: ignore[override] # type: ignore
def __setitem__(self, key: SupportsIndex, value: _T, /) -> None: ... # type: ignore[override] # type: ignore
def __delitem__(self, key: SupportsIndex, /) -> None: ... # type: ignore[override]
def __contains__(self, key: object, /) -> bool: ...
def __reduce__(self) -> tuple[type[Self], tuple[()], None, Iterator[_T]]: ... # type: ignore
def __iadd__(self, value: Iterable[_T], /) -> Self: ...
def __add__(self, value: Self, /) -> Self: ...
def __mul__(self, value: int, /) -> Self: ...
def __imul__(self, value: int, /) -> Self: ...
def __lt__(self, value: deque[_T], /) -> bool: ... # type: ignore
def __le__(self, value: deque[_T], /) -> bool: ... # type: ignore
def __gt__(self, value: deque[_T], /) -> bool: ... # type: ignore
def __ge__(self, value: deque[_T], /) -> bool: ... # type: ignore
def __eq__(self, value: object, /) -> bool: ...
if sys.version_info >= (3, 9):
def __class_getitem__(cls, item: Any, /) -> GenericAlias: ...
class Counter(dict[_T, int], Generic[_T]):
@overload
def __init__(self, iterable: None = None, /) -> None: ...
@overload
def __init__(self: Counter[str], iterable: None = None, /, **kwargs: int) -> None: ...
@overload
def __init__(self, mapping: SupportsKeysAndGetItem[_T, int], /) -> None: ...
@overload
def __init__(self, iterable: Iterable[_T], /) -> None: ...
def copy(self) -> Self: ...
def elements(self) -> Iterator[_T]: ... # type: ignore
def most_common(self, n: int | None = None) -> list[tuple[_T, int]]: ...
@classmethod
def fromkeys(cls, iterable: Any, v: int | None = None) -> NoReturn: ... # type: ignore[override]
@overload
def subtract(self, iterable: None = None, /) -> None: ...
@overload
def subtract(self, mapping: Mapping[_T, int], /) -> None: ...
@overload
def subtract(self, iterable: Iterable[_T], /) -> None: ...
# Unlike dict.update(), use Mapping instead of SupportsKeysAndGetItem for the first overload
# (source code does an `isinstance(other, Mapping)` check)
#
# The second overload is also deliberately different to dict.update()
# (if it were `Iterable[_T] | Iterable[tuple[_T, int]]`,
# the tuples would be added as keys, breaking type safety)
@overload # type: ignore[override]
def update(self, m: Mapping[_T, int], /, **kwargs: int) -> None: ...
@overload
def update(self, iterable: Iterable[_T], /, **kwargs: int) -> None: ...
@overload
def update(self, iterable: None = None, /, **kwargs: int) -> None: ...
def __missing__(self, key: _T) -> int: ...
def __delitem__(self, elem: object) -> None: ...
if sys.version_info >= (3, 10):
def __eq__(self, other: object) -> bool: ...
def __ne__(self, other: object) -> bool: ...
def __add__(self, other: Counter[_S]) -> Counter[_T | _S]: ...
def __sub__(self, other: Counter[_T]) -> Counter[_T]: ...
def __and__(self, other: Counter[_T]) -> Counter[_T]: ...
def __or__(self, other: Counter[_S]) -> Counter[_T | _S]: ... # type: ignore[override]
def __pos__(self) -> Counter[_T]: ...
def __neg__(self) -> Counter[_T]: ...
# several type: ignores because __iadd__ is supposedly incompatible with __add__, etc.
def __iadd__(self, other: SupportsItems[_T, int]) -> Self: ... # type: ignore[misc]
def __isub__(self, other: SupportsItems[_T, int]) -> Self: ...
def __iand__(self, other: SupportsItems[_T, int]) -> Self: ...
def __ior__(self, other: SupportsItems[_T, int]) -> Self: ... # type: ignore[override,misc]
if sys.version_info >= (3, 10):
def total(self) -> int: ...
def __le__(self, other: Counter[Any]) -> bool: ...
def __lt__(self, other: Counter[Any]) -> bool: ...
def __ge__(self, other: Counter[Any]) -> bool: ...
def __gt__(self, other: Counter[Any]) -> bool: ...
# The pure-Python implementations of the "views" classes
# These are exposed at runtime in `collections/__init__.py`
class _OrderedDictKeysView(KeysView[_KT_co]):
def __reversed__(self) -> Iterator[_KT_co]: ...
class _OrderedDictItemsView(ItemsView[_KT_co, _VT_co]):
def __reversed__(self) -> Iterator[tuple[_KT_co, _VT_co]]: ...
class _OrderedDictValuesView(ValuesView[_VT_co]):
def __reversed__(self) -> Iterator[_VT_co]: ...
# The C implementations of the "views" classes
# (At runtime, these are called `odict_keys`, `odict_items` and `odict_values`,
# but they are not exposed anywhere)
# pyright doesn't have a specific error code for subclassing error!
@final
class _odict_keys(dict_keys[_KT_co, _VT_co]): # type: ignore[misc] # pyright: ignore[reportGeneralTypeIssues]
def __reversed__(self) -> Iterator[_KT_co]: ...
@final
class _odict_items(dict_items[_KT_co, _VT_co]): # type: ignore[misc] # pyright: ignore[reportGeneralTypeIssues]
def __reversed__(self) -> Iterator[tuple[_KT_co, _VT_co]]: ...
@final
class _odict_values(dict_values[_KT_co, _VT_co]): # type: ignore[misc] # pyright: ignore[reportGeneralTypeIssues]
def __reversed__(self) -> Iterator[_VT_co]: ...
class OrderedDict(Dict[_KT, _VT], Generic[_KT, _VT]): # type: ignore
"""
``dict`` type subclass which remembers and preserves the order of keys
added. When ordered dict is iterated over, keys/items are returned in
the order they were added::
from collections import OrderedDict
# To make benefit of ordered keys, OrderedDict should be initialized
# from sequence of (key, value) pairs.
d = OrderedDict([("z", 1), ("a", 2)])
# More items can be added as usual
d["w"] = 5
d["b"] = 3
for k, v in d.items():
print(k, v)
Output::
z 1
a 2
w 5
b 3
"""
def popitem(self, last: bool = True) -> tuple[_KT, _VT]: ... # type: ignore
def move_to_end(self, key: _KT, last: bool = True) -> None: ... # type: ignore
def copy(self) -> Self: ...
def __reversed__(self) -> Iterator[_KT]: ... # type: ignore
def keys(self) -> _odict_keys[_KT, _VT]: ... # type: ignore
def items(self) -> _odict_items[_KT, _VT]: ... # type: ignore
def values(self) -> _odict_values[_KT, _VT]: ... # type: ignore
# The signature of OrderedDict.fromkeys should be kept in line with `dict.fromkeys`, modulo positional-only differences.
# Like dict.fromkeys, its true signature is not expressible in the current type system.
# See #3800 & https://github.com/python/typing/issues/548#issuecomment-683336963.
@classmethod
@overload
def fromkeys(cls, iterable: Iterable[_T], value: None = None) -> OrderedDict[_T, Any | None]: ... # type: ignore
@classmethod
@overload
def fromkeys(cls, iterable: Iterable[_T], value: _S) -> OrderedDict[_T, _S]: ... # type: ignore
# Keep OrderedDict.setdefault in line with MutableMapping.setdefault, modulo positional-only differences.
@overload
def setdefault(self: OrderedDict[_KT, _T | None], key: _KT, default: None = None) -> _T | None: ... # type: ignore
@overload
def setdefault(self, key: _KT, default: _VT) -> _VT: ... # type: ignore
# Same as dict.pop, but accepts keyword arguments
@overload
def pop(self, key: _KT) -> _VT: ... # type: ignore
@overload
def pop(self, key: _KT, default: _VT) -> _VT: ... # type: ignore
@overload
def pop(self, key: _KT, default: _T) -> _VT | _T: ... # type: ignore
def __eq__(self, value: object, /) -> bool: ...
if sys.version_info >= (3, 9):
@overload
def __or__(self, value: dict[_KT, _VT], /) -> Self: ... # type: ignore
@overload
def __or__(self, value: dict[_T1, _T2], /) -> OrderedDict[_KT | _T1, _VT | _T2]: ... # type: ignore
@overload
def __ror__(self, value: dict[_KT, _VT], /) -> Self: ... # type: ignore
@overload
def __ror__(self, value: dict[_T1, _T2], /) -> OrderedDict[_KT | _T1, _VT | _T2]: ... # type: ignore[misc] # type: ignore
class defaultdict(dict[_KT, _VT]): # type: ignore
default_factory: Callable[[], _VT] | None
@overload
def __init__(self) -> None: ...
@overload
def __init__(self: defaultdict[str, _VT], **kwargs: _VT) -> None: ... # pyright: ignore[reportInvalidTypeVarUse] #11780
@overload
def __init__(self, default_factory: Callable[[], _VT] | None, /) -> None: ...
@overload
def __init__(
self: defaultdict[str, _VT], # pyright: ignore[reportInvalidTypeVarUse] #11780
default_factory: Callable[[], _VT] | None,
/,
**kwargs: _VT, # type: ignore
) -> None: ...
@overload
def __init__(self, default_factory: Callable[[], _VT] | None, map: SupportsKeysAndGetItem[_KT, _VT], /) -> None: ... # type: ignore
@overload
def __init__(
self: defaultdict[str, _VT], # pyright: ignore[reportInvalidTypeVarUse] #11780
default_factory: Callable[[], _VT] | None,
map: SupportsKeysAndGetItem[str, _VT],
/,
**kwargs: _VT, # type: ignore
) -> None: ...
@overload
def __init__(self, default_factory: Callable[[], _VT] | None, iterable: Iterable[tuple[_KT, _VT]], /) -> None: ... # type: ignore
@overload
def __init__(
self: defaultdict[str, _VT], # pyright: ignore[reportInvalidTypeVarUse] #11780
default_factory: Callable[[], _VT] | None,
iterable: Iterable[tuple[str, _VT]],
/,
**kwargs: _VT, # type: ignore
) -> None: ...
def __missing__(self, key: _KT, /) -> _VT: ... # type: ignore
def __copy__(self) -> Self: ...
def copy(self) -> Self: ...
if sys.version_info >= (3, 9):
@overload
def __or__(self, value: dict[_KT, _VT], /) -> Self: ... # type: ignore
@overload
def __or__(self, value: dict[_T1, _T2], /) -> defaultdict[_KT | _T1, _VT | _T2]: ...
@overload
def __ror__(self, value: dict[_KT, _VT], /) -> Self: ... # type: ignore
@overload
def __ror__(self, value: dict[_T1, _T2], /) -> defaultdict[_KT | _T1, _VT | _T2]: ... # type: ignore[misc]
class ChainMap(MutableMapping[_KT, _VT]): # type: ignore
maps: list[MutableMapping[_KT, _VT]] # type: ignore
def __init__(self, *maps: MutableMapping[_KT, _VT]) -> None: ... # type: ignore
def new_child(self, m: MutableMapping[_KT, _VT] | None = None) -> Self: ... # type: ignore
@property
def parents(self) -> Self: ...
def __setitem__(self, key: _KT, value: _VT) -> None: ... # type: ignore
def __delitem__(self, key: _KT) -> None: ...
def __getitem__(self, key: _KT) -> _VT: ... # type: ignore
def __iter__(self) -> Iterator[_KT]: ... # type: ignore
def __len__(self) -> int: ...
def __contains__(self, key: object) -> bool: ...
@overload
def get(self, key: _KT, default: None = None) -> _VT | None: ... # type: ignore
@overload
def get(self, key: _KT, default: _T) -> _VT | _T: ... # type: ignore
def __missing__(self, key: _KT) -> _VT: ... # undocumented # type: ignore
def __bool__(self) -> bool: ...
# Keep ChainMap.setdefault in line with MutableMapping.setdefault, modulo positional-only differences.
@overload
def setdefault(self: ChainMap[_KT, _T | None], key: _KT, default: None = None) -> _T | None: ... # type: ignore
@overload
def setdefault(self, key: _KT, default: _VT) -> _VT: ... # type: ignore
@overload
def pop(self, key: _KT) -> _VT: ... # type: ignore
@overload
def pop(self, key: _KT, default: _VT) -> _VT: ... # type: ignore
@overload
def pop(self, key: _KT, default: _T) -> _VT | _T: ... # type: ignore
def copy(self) -> Self: ...
__copy__ = copy
# All arguments to `fromkeys` are passed to `dict.fromkeys` at runtime,
# so the signature should be kept in line with `dict.fromkeys`.
@classmethod
@overload
def fromkeys(cls, iterable: Iterable[_T]) -> ChainMap[_T, Any | None]: ...
@classmethod
@overload
# Special-case None: the user probably wants to add non-None values later.
def fromkeys(cls, iterable: Iterable[_T], value: None, /) -> ChainMap[_T, Any | None]: ...
@classmethod
@overload
def fromkeys(cls, iterable: Iterable[_T], value: _S, /) -> ChainMap[_T, _S]: ...
if sys.version_info >= (3, 9):
@overload
def __or__(self, other: Mapping[_KT, _VT]) -> Self: ... # type: ignore
@overload
def __or__(self, other: Mapping[_T1, _T2]) -> ChainMap[_KT | _T1, _VT | _T2]: ...
@overload
def __ror__(self, other: Mapping[_KT, _VT]) -> Self: ... # type: ignore
@overload
def __ror__(self, other: Mapping[_T1, _T2]) -> ChainMap[_KT | _T1, _VT | _T2]: ...
# ChainMap.__ior__ should be kept roughly in line with MutableMapping.update()
@overload # type: ignore[misc]
def __ior__(self, other: SupportsKeysAndGetItem[_KT, _VT]) -> Self: ... # type: ignore
@overload
def __ior__(self, other: Iterable[tuple[_KT, _VT]]) -> Self: ... # type: ignore