元组(tuple)元组不能被修改
定义:
tuple1 = ()
tuple2 = (1,)
tuple3 = (1, 2.1, "adf")
注意: 定义单个元素时最后的 逗号分隔符不能省,如
>>> tuple2 = (1)
>>> type(tuple2)
<class 'int'>也可以不加圆括号定义元组
>>> temp = 1,2,3,4
>>> type(temp)
<class 'tuple'>
例子:
>>> 8 * (8)
64
>>> 8 * (8,)
(8, 8, 8, 8, 8, 8, 8, 8)
元组切片:
>>> temp = ("c++", "python", "c")
>>> temp = temp[:1] + ("java",) + temp[1:]
>>> temp
('c++', 'java', 'python', 'c')("java",)后面的逗号不可省,省后("java")类型为 str 非 tuple