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myTupleT = namedtuple('myTuple', ['name', 'date', 'foo', 'bar'])
def myTuple(name, date, foo=None, bar=None):
	return myTuple(name, date, foo, bar)

# ---- ---- ---- ---- ---- OR ---- ---- ---- ---- ----

class myTuple(namedtuple('myTuple', 'name date foo bar')):
	def __new__(cls, name, date, foo=None, bar=None):
		# add default values
		return super(myTuple, cls).__new__(cls, name, date, foo, bar)