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stdlib: Add several missing comparison methods by AlexWaygood · Pull Request #7202 · python/typeshed · GitHub

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stdlib: Add several missing comparison methods #7202

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Merged
JelleZijlstra merged 4 commits into from
Feb 14, 2022
Conversation 13 Commits 4 Checks 0 Files changed
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stdlib: Add several missing comparison methods #7202

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60e344d
stdlib: Add several missing comparison methods
AlexWaygood Feb 14, 2022
c56e7d5
Update tracemalloc.pyi
AlexWaygood Feb 14, 2022
fa128ab
Stupid CPython micro-optimisation
AlexWaygood Feb 14, 2022
b28484b
Whose side are you on, stubtest?
AlexWaygood Feb 14, 2022
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5 changes: 5 additions & 0 deletions stdlib/asyncio/events.pyi
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Original file line number Diff line number Diff line change
Expand Up @@ -55,6 +55,11 @@ class TimerHandle(Handle):
if sys.version_info >= (3, 7):
def when(self) -> float: ...

def __lt__(self, other: TimerHandle) -> bool: ...
def __le__(self, other: TimerHandle) -> bool: ...
def __gt__(self, other: TimerHandle) -> bool: ...
def __ge__(self, other: TimerHandle) -> bool: ...

class AbstractServer:
@abstractmethod
def close(self) -> None: ...
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8 changes: 8 additions & 0 deletions stdlib/collections/__init__.pyi
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Expand Up @@ -220,6 +220,10 @@ class deque(MutableSequence[_T], Generic[_T]):
def __add__(self: Self, __other: Self) -> Self: ...
def __mul__(self: Self, __other: int) -> Self: ...
def __imul__(self: Self, __other: int) -> Self: ...
def __lt__(self, __other: deque[_T]) -> bool: ...
def __le__(self, __other: deque[_T]) -> bool: ...
def __gt__(self, __other: deque[_T]) -> bool: ...
def __ge__(self, __other: deque[_T]) -> bool: ...
if sys.version_info >= (3, 9):
def __class_getitem__(cls, __item: Any) -> GenericAlias: ...

Expand Down Expand Up @@ -266,6 +270,10 @@ class Counter(dict[_T, int], Generic[_T]):
def __ior__(self: Self, other: Counter[_T]) -> Self: ... # type: ignore[override]
if sys.version_info >= (3, 10):
def total(self) -> int: ...
def __le__(self, other: Counter[object]) -> bool: ...

JelleZijlstra Feb 14, 2022

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Choose a reason Spam Abuse Off Topic Outdated Duplicate Resolved Low Quality

I think we should use Counter[Any] here. It doesn't work with all Counters, only with Counters of a type that's comparable to our type. That's something we can't express in the current type system, so we should use Any.

AlexWaygood Feb 14, 2022

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Choose a reason Spam Abuse Off Topic Outdated Duplicate Resolved Low Quality 
>>> from collections import Counter
>>> Counter('abcde') < Counter((1, 2, 3))
False

What am I missing? :)

JelleZijlstra Feb 14, 2022

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Choose a reason Spam Abuse Off Topic Outdated Duplicate Resolved Low Quality

Ah right, the type parameter is the keys, but it compares the values, which are always ints.

This does make for some fun behavior:

In [16]: Counter((1, 2, 3)) < Counter('abcde')
Out[16]: False

In [17]: Counter('abcde') < Counter((1, 2, 3))
Out[17]: False

AlexWaygood Feb 14, 2022 •
edited
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Counters are sort of halfway between dicts and sets, and the comparison methods come from the set-like side of their personality, so it does sort of make sense if you squint at it from the right angle.
def __lt__(self, other: Counter[object]) -> bool: ...
def __ge__(self, other: Counter[object]) -> bool: ...
def __gt__(self, other: Counter[object]) -> bool: ...

@final
class _OrderedDictKeysView(dict_keys[_KT_co, _VT_co], Reversible[_KT_co]): # type: ignore[misc]
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20 changes: 19 additions & 1 deletion stdlib/tracemalloc.pyi
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Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
import sys
from _tracemalloc import *
from typing import Optional, Sequence, Union, overload
from typing import Any, Optional, Sequence, Union, overload
from typing_extensions import SupportsIndex

def get_object_traceback(obj: object) -> Traceback | None: ...
Expand Down Expand Up @@ -41,6 +41,15 @@ class Frame:
filename: str
lineno: int
def __init__(self, frame: _FrameTupleT) -> None: ...
def __lt__(self, other: Frame) -> bool: ...

JelleZijlstra Feb 14, 2022

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Choose a reason Spam Abuse Off Topic Outdated Duplicate Resolved Low Quality

Confirmed that __lt__ for some reason does not have the NotImplemented trick.

AlexWaygood Feb 14, 2022

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It's because it's functools.total_ordering that uses the NotImplemented trick, and __lt__ is the only method that's actually defined on the class (all the other methods are autogenerated using @functools.total_ordering).

AlexWaygood Feb 14, 2022 •
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This recent change is why I used the sys.version_info guards, FWIW: python/cpython#30818
if sys.version_info >= (3, 11):
def __gt__(self, other: Frame) -> bool: ...
def __ge__(self, other: Frame) -> bool: ...
def __le__(self, other: Frame) -> bool: ...
else:
def __gt__(self, other: Frame, NotImplemented: Any = ...) -> bool: ...
def __ge__(self, other: Frame, NotImplemented: Any = ...) -> bool: ...
def __le__(self, other: Frame, NotImplemented: Any = ...) -> bool: ...

if sys.version_info >= (3, 9):
_TraceTupleT = Union[tuple[int, int, Sequence[_FrameTupleT], Optional[int]], tuple[int, int, Sequence[_FrameTupleT]]]
Expand Down Expand Up @@ -69,6 +78,15 @@ class Traceback(Sequence[Frame]):
@overload
def __getitem__(self, s: slice) -> Sequence[Frame]: ...
def __len__(self) -> int: ...
def __lt__(self, other: Traceback) -> bool: ...
if sys.version_info >= (3, 11):
def __gt__(self, other: Traceback) -> bool: ...
def __ge__(self, other: Traceback) -> bool: ...
def __le__(self, other: Traceback) -> bool: ...
else:
def __gt__(self, other: Traceback, NotImplemented: Any = ...) -> bool: ...
def __ge__(self, other: Traceback, NotImplemented: Any = ...) -> bool: ...
def __le__(self, other: Traceback, NotImplemented: Any = ...) -> bool: ...

class Snapshot:
def __init__(self, traces: Sequence[_TraceTupleT], traceback_limit: int) -> None: ...
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1 change: 1 addition & 0 deletions stdlib/urllib/request.pyi
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Expand Up @@ -92,6 +92,7 @@ class BaseHandler:
parent: OpenerDirector
def add_parent(self, parent: OpenerDirector) -> None: ...
def close(self) -> None: ...
def __lt__(self, other: object) -> bool: ...

class HTTPDefaultErrorHandler(BaseHandler):
def http_error_default(
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4 changes: 4 additions & 0 deletions stdlib/xml/etree/ElementTree.pyi
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Expand Up @@ -111,6 +111,10 @@ PI: Callable[..., Element]
class QName:
text: str
def __init__(self, text_or_uri: str, tag: str | None = ...) -> None: ...
def __lt__(self, other: QName | str) -> bool: ...
def __le__(self, other: QName | str) -> bool: ...
def __gt__(self, other: QName | str) -> bool: ...
def __ge__(self, other: QName | str) -> bool: ...

class ElementTree:
def __init__(self, element: Element | None = ..., file: _File | None = ...) -> None: ...
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