VimPlug/typeshed
1
0
Fork 0
mirror of https://github.com/davidhalter/typeshed.git synced 2025-12-07 20:54:28 +08:00
Code Issues Actions Packages Projects Releases Wiki Activity

Use a more accurate type for predicates in itertools (#2732)

Browse Source 
The only constraint on the return value of a predicate is to be "boolable".
Because `bool` recives an object in the constructor https://github.com/python/typeshed/blob/master/stdlib/2and3/builtins.pyi#L803 this is a more accurate description of a predicate.
This commit is contained in:
Tomer Keren
2019-01-10 21:30:28 +02:00
committed by Jelle Zijlstra
parent 0854df365d
commit be99a2a5f0
1 changed files with 4 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
stdlib/3/itertools.pyi
View File

@@ -8,6 +8,7 @@ from typing import (Iterator, TypeVar, Iterable, overload, Any, Callable, Tuple,
_T = TypeVar('_T')
_S = TypeVar('_S')
_N = TypeVar('_N', int, float)
Predicate = Callable[[_T], object]
def count(start: _N = ...,
step: _N = ...) -> Iterator[_N]: ... # more general types?
@@ -28,9 +29,9 @@ class chain(Iterator[_T], Generic[_T]):
def from_iterable(iterable: Iterable[Iterable[_S]]) -> Iterator[_S]: ...
def compress(data: Iterable[_T], selectors: Iterable[Any]) -> Iterator[_T]: ...
def dropwhile(predicate: Callable[[_T], Any],
def dropwhile(predicate: Predicate[_T],
iterable: Iterable[_T]) -> Iterator[_T]: ...
def filterfalse(predicate: Optional[Callable[[_T], Any]],
def filterfalse(predicate: Optional[Predicate[_T]],
iterable: Iterable[_T]) -> Iterator[_T]: ...
@overload
@@ -46,7 +47,7 @@ def islice(iterable: Iterable[_T], start: Optional[int], stop: Optional[int],
step: Optional[int] = ...) -> Iterator[_T]: ...
def starmap(func: Callable[..., _S], iterable: Iterable[Iterable[Any]]) -> Iterator[_S]: ...
def takewhile(predicate: Callable[[_T], Any],
def takewhile(predicate: Predicate[_T],
iterable: Iterable[_T]) -> Iterator[_T]: ...
def tee(iterable: Iterable[_T], n: int = ...) -> Tuple[Iterator[_T], ...]: ...
def zip_longest(*p: Iterable[Any],