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Merged
merged 1 commit into from
Apr 8, 2021
Merged

TYP: join.pyi #40831

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144 changes: 144 additions & 0 deletions pandas/_libs/join.pyi
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Original file line number Diff line number Diff line change
@@ -0,0 +1,144 @@
import numpy as np

def inner_join(
left: np.ndarray, # const intp_t[:]
right: np.ndarray, # const intp_t[:]
max_groups: int,
) -> tuple[
np.ndarray, # np.ndarray[np.intp]
np.ndarray, # np.ndarray[np.intp]
]: ...


def left_outer_join(
left: np.ndarray, # const intp_t[:]
right: np.ndarray, # const intp_t[:]
max_groups: int,
sort: bool = True,
) -> tuple[
np.ndarray, # np.ndarray[np.intp]
np.ndarray, # np.ndarray[np.intp]
]: ...


def full_outer_join(
left: np.ndarray, # const intp_t[:]
right: np.ndarray, # const intp_t[:]
max_groups: int,
) -> tuple[
np.ndarray, # np.ndarray[np.intp]
np.ndarray, # np.ndarray[np.intp]
]: ...


def ffill_indexer(
indexer: np.ndarray # const intp_t[:]
) -> np.ndarray: ... # np.ndarray[np.intp]


def left_join_indexer_unique(
left: np.ndarray, # ndarray[join_t]
right: np.ndarray, # ndarray[join_t]
) -> np.ndarray: ... # np.ndarray[np.intp]


def left_join_indexer(
left: np.ndarray, # ndarray[join_t]
right: np.ndarray, # ndarray[join_t]
) -> tuple[
np.ndarray, # np.ndarray[join_t]
np.ndarray, # np.ndarray[np.intp]
np.ndarray, # np.ndarray[np.intp]
]: ...


def inner_join_indexer(
left: np.ndarray, # ndarray[join_t]
right: np.ndarray, # ndarray[join_t]
) -> tuple[
np.ndarray, # np.ndarray[join_t]
np.ndarray, # np.ndarray[np.intp]
np.ndarray, # np.ndarray[np.intp]
]: ...


def outer_join_indexer(
left: np.ndarray, # ndarray[join_t]
right: np.ndarray, # ndarray[join_t]
) -> tuple[
np.ndarray, # np.ndarray[join_t]
np.ndarray, # np.ndarray[np.intp]
np.ndarray, # np.ndarray[np.intp]
]: ...


def asof_join_backward_on_X_by_Y(
left_values: np.ndarray, # asof_t[:]
right_values: np.ndarray, # asof_t[:]
left_by_values: np.ndarray, # by_t[:]
right_by_values: np.ndarray, # by_t[:]
allow_exact_matches: bool = True,
tolerance=None,
) -> tuple[
np.ndarray, # np.ndarray[np.intp]
np.ndarray, # np.ndarray[np.intp]
]: ...


def asof_join_forward_on_X_by_Y(
left_values: np.ndarray, # asof_t[:]
right_values: np.ndarray, # asof_t[:]
left_by_values: np.ndarray, # by_t[:]
right_by_values: np.ndarray, # by_t[:]
allow_exact_matches: bool = True,
tolerance=None,
) -> tuple[
np.ndarray, # np.ndarray[np.intp]
np.ndarray, # np.ndarray[np.intp]
]: ...


def asof_join_nearest_on_X_by_Y(
left_values: np.ndarray, # asof_t[:]
right_values: np.ndarray, # asof_t[:]
left_by_values: np.ndarray, # by_t[:]
right_by_values: np.ndarray, # by_t[:]
allow_exact_matches: bool = True,
tolerance=None,
) -> tuple[
np.ndarray, # np.ndarray[np.intp]
np.ndarray, # np.ndarray[np.intp]
]: ...


def asof_join_backward(
left_values: np.ndarray, # asof_t[:]
right_values: np.ndarray, # asof_t[:]
allow_exact_matches: bool = True,
tolerance=None,
) -> tuple[
np.ndarray, # np.ndarray[np.intp]
np.ndarray, # np.ndarray[np.intp]
]: ...


def asof_join_forward(
left_values: np.ndarray, # asof_t[:]
right_values: np.ndarray, # asof_t[:]
allow_exact_matches: bool = True,
tolerance=None,
) -> tuple[
np.ndarray, # np.ndarray[np.intp]
np.ndarray, # np.ndarray[np.intp]
]: ...


def asof_join_nearest(
left_values: np.ndarray, # asof_t[:]
right_values: np.ndarray, # asof_t[:]
allow_exact_matches: bool = True,
tolerance=None,
) -> tuple[
np.ndarray, # np.ndarray[np.intp]
np.ndarray, # np.ndarray[np.intp]
]: ...
18 changes: 15 additions & 3 deletions pandas/core/reshape/merge.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1485,7 +1485,8 @@ def get_join_indexers(
"outer": libjoin.full_outer_join,
}[how]

return join_func(lkey, rkey, count, **kwargs)
# error: Cannot call function of unknown type
return join_func(lkey, rkey, count, **kwargs) # type: ignore[operator]


def restore_dropped_levels_multijoin(
Expand Down Expand Up @@ -1624,9 +1625,20 @@ def get_result(self) -> DataFrame:
self.left._info_axis, self.right._info_axis, self.suffixes
)

left_join_indexer: np.ndarray | None
right_join_indexer: np.ndarray | None

if self.fill_method == "ffill":
left_join_indexer = libjoin.ffill_indexer(left_indexer)
right_join_indexer = libjoin.ffill_indexer(right_indexer)
# error: Argument 1 to "ffill_indexer" has incompatible type
# "Optional[ndarray]"; expected "ndarray"
left_join_indexer = libjoin.ffill_indexer(
left_indexer # type: ignore[arg-type]
)
# error: Argument 1 to "ffill_indexer" has incompatible type
# "Optional[ndarray]"; expected "ndarray"
right_join_indexer = libjoin.ffill_indexer(
right_indexer # type: ignore[arg-type]
)
else:
left_join_indexer = left_indexer
right_join_indexer = right_indexer
Expand Down