python gets MySQL database information

There are five steps as follows

• 1 Connect to the database

import pymysql


# 这里的connect,也可以写为Connection和Connect
database = pymysql.connect(
    host='localhost', # 如果是服务器，则输公网ip
    user='root', # 当时设置的数据超级管理员账户
    passwd='xxxxxx', # 当时设置的管理员密码
    port=3306, #MySQL数据的端口为3306，注意:切记这里不要写引号''
    database='momo' # 当时在MySQL中创建的数据库名字
    )

• 2 Get a cursor - that is, open up a buffer to store the result of the execution of the sql statement

cursor = database.cursor()

• 3 Execute sql statement, get/select data from sql, execute data

sql = 'select * from student'
cursor.execute(sql)

• 4 Get the execution result

data = cursor.fetchall() # 获取所有的数据
for i in data:
print('id:%s   name: %s' % (i[0], i[1]))
data = cursor,fetchone() # 获取一条数据

• 6 close the connection

database.close()

• Execution result display

id:1  name:章子怡
id:2  name:刘明湘
id:3  name:蔡佩轩
id:4  name:林志玲
id:5  name:白百合
id:6  name:杨钰莹
id:7  name:杨贵妃
id:8  name:夏雨荷
id:9  name:张柏芝
id:10  name:刘若英