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feat: add aliases for several series properties #80

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Merged
merged 4 commits into from
Oct 4, 2023
Merged

feat: add aliases for several series properties #80

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7752a20
feat: add aliases for several series properties
TrevorBergeron Oct 2, 2023
2342bbb
Merge branch 'main' into series_aliases
TrevorBergeron Oct 4, 2023
8a03b84
fix merge mistake
TrevorBergeron Oct 4, 2023
9befd98
Merge branch 'main' into series_aliases
tswast Oct 4, 2023
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15 changes: 15 additions & 0 deletions bigframes/series.py
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Original file line number Diff line number Diff line change
Expand Up @@ -99,6 +99,10 @@ def shape(self) -> typing.Tuple[int]:
def size(self) -> int:
return self.shape[0]

@property
def ndim(self) -> int:
return 1

@property
def empty(self) -> bool:
return self.shape[0] == 0
Expand All @@ -123,6 +127,13 @@ def query_job(self) -> Optional[bigquery.QueryJob]:
def struct(self) -> structs.StructAccessor:
return structs.StructAccessor(self._block)

@property
def T(self) -> Series:
return self.transpose()

def transpose(self) -> Series:
return self

def _set_internal_query_job(self, query_job: bigquery.QueryJob):
self._query_job = query_job

Expand Down Expand Up @@ -362,6 +373,8 @@ def ffill(self, *, limit: typing.Optional[int] = None) -> Series:
window = bigframes.core.WindowSpec(preceding=limit, following=0)
return self._apply_window_op(agg_ops.LastNonNullOp(), window)

pad = ffill

def bfill(self, *, limit: typing.Optional[int] = None) -> Series:
window = bigframes.core.WindowSpec(preceding=0, following=limit)
return self._apply_window_op(agg_ops.FirstNonNullOp(), window)
Expand Down Expand Up @@ -743,6 +756,8 @@ def agg(self, func: str | typing.Sequence[str]) -> scalars.Scalar | Series:
agg_ops.lookup_agg_func(typing.cast(str, func))
)

aggregate = agg

def skew(self):
count = self.count()
if count < 3:
Expand Down
14 changes: 14 additions & 0 deletions third_party/bigframes_vendored/pandas/core/series.py
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Original file line number Diff line number Diff line change
Expand Up @@ -64,6 +64,20 @@ def name(self) -> Hashable:
"""
raise NotImplementedError(constants.ABSTRACT_METHOD_ERROR_MESSAGE)

@property
def T(self) -> Series:
"""Return the transpose, which is by definition self."""
raise NotImplementedError(constants.ABSTRACT_METHOD_ERROR_MESSAGE)

def transpose(self) -> Series:
"""
Return the transpose, which is by definition self.

Returns:
Series
"""
raise NotImplementedError(constants.ABSTRACT_METHOD_ERROR_MESSAGE)

def reset_index(
self,
*,
Expand Down