12.Python

Tuple

用小括号、或者无括号来表述，是一连串有顺序的数字。

a_tuple = (12, 3, 5, 15, 6)

another_tuple = 12, 3, 5, 15 , 6

List

以中括号来命名:

a_list = [12, 3, 67, 7, 82]

两者对比

他们的元素可以一个一个地被迭代、输出、运用、定位取值:

for content in a_list:

    print(content)

"""

12

3

67

7

82

"""

for content_tuple in a_tuple:

    print(content_tuple)

"""

12

3

5

15

6

"""

下一个例子，依次输出a_tuple和a_list中的各个元素：

for index in range(len(a_list)):

    print("index = ", index, ", number in list = ", a_list[index])

"""

index =  0 , number in list =  12

index =  1 , number in list =  3

index =  2 , number in list =  67

index =  3 , number in list =  7

index =  4 , number in list =  82

"""

for index in range(len(a_tuple)):

    print("index = ", index, ", number in tuple = ", a_tuple[index])

"""

index =  0 , number in tuple =  12

index =  1 , number in tuple =  3

index =  2 , number in tuple =  5

index =  3 , number in tuple =  15

index =  4 , number in tuple =  6

"""