tup = ('Google', 'Runoob', 'Taobao', 'Wiki', 'Weibo','Weixin') a,b = 1,2 assert a == 1 assert b == 2 a,b = b,a assert a == 2 assert b == 1 assert len(tup) == 6 # unpacking builder a = 1, 2, 3 b = *a, 4, 5 assert b == (1, 2, 3, 4, 5) a = tuple([]) b = *a, 1, 2, 3, *a, *a assert b == (1, 2, 3)