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Add some cumulative Column operations #193

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Merged
merged 3 commits into from
Jul 5, 2023
Merged

Add some cumulative Column operations #193

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15bdb38
add some cumulative Column operations
MarcoGorelli Jul 3, 2023
35cc807
Merge remote-tracking branch 'upstream/main' into cumulative-functions
MarcoGorelli Jul 5, 2023
2dd19d7
update
MarcoGorelli Jul 5, 2023
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26 changes: 26 additions & 0 deletions spec/API_specification/dataframe_api/column_object.py
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Original file line number Diff line number Diff line change
Expand Up @@ -525,6 +525,32 @@ def var(self, *, correction: int | float = 1, skip_nulls: bool = True) -> Scalar
Whether to skip null values.
"""

def cumulative_max(self) -> Column:
"""
Reduction returns a Column. Any data type that supports comparisons
must be supported. The returned value has the same dtype as the column.
"""

def cumulative_min(self) -> Column:
"""
Reduction returns a Column. Any data type that supports comparisons
must be supported. The returned value has the same dtype as the column.
"""

def cumulative_sum(self) -> Column:
"""
Reduction returns a Column. Must be supported for numerical and
datetime data types. The returned value has the same dtype as the
column.
"""

def cumulative_prod(self) -> Column:
"""
Reduction returns a Column. Must be supported for numerical and
datetime data types. The returned value has the same dtype as the
column.
"""

def is_null(self) -> Column:
"""
Check for 'missing' or 'null' entries.
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