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- 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)
- assert (1,) == tuple([1])
- assert (1,2,) == tuple([1,2])
- a = 1,
- assert a == (1,)
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