Python,元组

1.元组：不可改变的序列 用()括起来

print(3,)(3,)

print(3*(3+3,))(18,18,18)

2.tuple()--把一个序列作为参数转化为元组,如果参数是元组，这返回该元组

print(tuple([1,2,3]))(1,2,3)print(tuple("abc"))("a","b","c")