Operation and use of the Python dictionary

Description of the Dictionary

A dictionary is a key-value type of data that is used as a dictionary of our school, using pinyin (key) to check the details of the corresponding word (value).

Characteristics of the Dictionary

1, the dictionary is unordered (not like a list of subscript, it through key to get value)

2, key must be unique, so naturally go heavy

Operation of the Dictionary

info = {    'stu1101'"tenglan Wu",     ' stu1102 ' " Longze Luola " ,     ' stu1103 ' " Xiaoze Maliya " ,}

Get all information

Print (info)

Get one of these values

Print (info["stu1101"])

Change one of the values

info["stu1101"] = "Enrique"

Add one of the values

info["stu1104"] = "Cang jing Empty"

Remove one of the values

Del info["stu1101"]

Info.pop ("stu1101")

Info.popitem () #随机删除.

Operation and use of the Python dictionary