>>> class Foo:
	def __init__(me, name):  # use of me is non-standard
		me.name = name
	def __and__(me, other):
		return Foo(me.name + " " + other.name)
	def __repr__(me):
		return "A foo instance named {}".format(me.name)

	
>>> cellA = Foo("BzzKt")
>>> cellB = Foo("rrDNA")
>>> cellB
A foo instance named rrDNA
>>> cellC = cellA & cellB
>>> cellC
A foo instance named BzzKt rrDNA