def union(self, a: DRS, b: DRS) -> DRS:
"""
Returns elements that are in either a or b
:param a: an iterable object
:param b: another iterable object
:return: the union of the two provided iterable objects
"""
assert a.mode == b.mode, "Input parameters are not in the same mode (fields, table)"
o_drs = a.union(b)
return o_drs
def union(self, a: DRS, b: DRS) -> DRS:
"""
Returns elements that are in either a or b
:param a: an iterable object
:param b: another iterable object
:return: the union of the two provided iterable objects
"""
a = self._general_to_drs(a)
b = self._general_to_drs(b)
self._assert_same_mode(a, b)
o_drs = a.union(b)
return o_drs