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5-ary izip #1042

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Merged
JelleZijlstra merged 10 commits into from
Mar 21, 2017
Merged

5-ary izip #1042

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42f37c0
5-ary izip
gnoack Mar 20, 2017
536d192
Update itertools.pyi
gnoack Mar 20, 2017
8e0d38f
Update itertools.pyi
gnoack Mar 20, 2017
014a23a
Define _T5
gnoack Mar 20, 2017
62efd05
Add support for 6-ary izip and generic n-ary case
gnoack Mar 20, 2017
cd949ba
Fix fallback.
gnoack Mar 20, 2017
4152283
Update itertools.pyi
gnoack Mar 20, 2017
4e62b05
Update itertools.pyi
gnoack Mar 20, 2017
4149a26
Update itertools.pyi
gnoack Mar 20, 2017
b621b2f
Remove fallback again
gnoack Mar 20, 2017
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17 changes: 16 additions & 1 deletion stdlib/2/itertools.pyi
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Original file line number Diff line number Diff line change
Expand Up @@ -47,6 +47,8 @@ _T1 = TypeVar('_T1')
_T2 = TypeVar('_T2')
_T3 = TypeVar('_T3')
_T4 = TypeVar('_T4')
_T5 = TypeVar('_T5')
_T6 = TypeVar('_T6')

@overload
def imap(func: Callable[[_T1], _S], iter1: Iterable[_T1]) -> Iterator[_S]: ...
Expand All @@ -71,7 +73,20 @@ def izip(iter1: Iterable[_T1], iter2: Iterable[_T2],
@overload
def izip(iter1: Iterable[_T1], iter2: Iterable[_T2], iter3: Iterable[_T3],
iter4: Iterable[_T4]) -> Iterator[Tuple[_T1, _T2,
_T3, _T4]]: ... # TODO more than four iterables
_T3, _T4]]: ...
@overload
def izip(iter1: Iterable[_T1], iter2: Iterable[_T2],
iter3: Iterable[_T3], iter4: Iterable[_T4],
iter5: Iterable[_T5]) -> Iterator[Tuple[_T1, _T2,
_T3, _T4, _T5]]: ...
@overload
def izip(iter1: Iterable[_T1], iter2: Iterable[_T2],
iter3: Iterable[_T3], iter4: Iterable[_T4],
iter5: Iterable[_T5], iter6: Iterable[_T6]) -> Iterator[Tuple[_T1, _T2, _T3,
_T4, _T5, _T6]]: ...
# TODO more than 6 iterables
# TODO should have a fallback for the n-ary variant

def izip_longest(*p: Iterable[Any],
fillvalue: Any = ...) -> Iterator[Any]: ...

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