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[SPARK-6536] [PySpark] Column.inSet() in Python #5190

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[SPARK-6536] [PySpark] Column.inSet() in Python #5190

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17 changes: 17 additions & 0 deletions python/pyspark/sql/dataframe.py
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Original file line number Diff line number Diff line change
Expand Up @@ -985,6 +985,23 @@ def substr(self, startPos, length):

__getslice__ = substr

def inSet(self, *cols):
""" A boolean expression that is evaluated to true if the value of this
expression is contained by the evaluated values of the arguments.

>>> df[df.name.inSet("Bob", "Mike")].collect()
[Row(age=5, name=u'Bob')]
>>> df[df.age.inSet([1, 2, 3])].collect()
[Row(age=2, name=u'Alice')]
"""
if len(cols) == 1 and isinstance(cols[0], (list, set)):
cols = cols[0]
cols = [c._jc if isinstance(c, Column) else _create_column_from_literal(c) for c in cols]
sc = SparkContext._active_spark_context
jcols = ListConverter().convert(cols, sc._gateway._gateway_client)
jc = getattr(self._jc, "in")(sc._jvm.PythonUtils.toSeq(jcols))
return Column(jc)

# order
asc = _unary_op("asc", "Returns a sort expression based on the"
" ascending order of the given column name.")
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