def where(condition, x=None, y=None):
'''Return items from x or y depending on condition'''
if x and y:
return _dsutils.select(condition, (x, y), 0)
elif not x and not y:
return _cmps.nonZero(condition)
else:
raise ValueError, "Both x and y must be specified"
def where(condition, x=None, y=None):
'''Return items from x or y depending on condition'''
if x and y:
return _dsutils.select(condition, x, y)
elif not x and not y:
return _cmps.nonZero(condition)
else:
raise ValueError, "Both x and y must be specified"
def select(condlist, choicelist, default=0):
'''Return dataset with items drawn from choices according to conditions'''
return _dsutils.select(condlist, choicelist, default)
def select(condlist, choicelist, default=0):
'''Return dataset with items drawn from choices according to conditions'''
return _dsutils.select(condlist, choicelist, default)