PyMySQL连接MySQL数据库

Posted 2020-10-25 此生不换Yang

首先，

添加Pymysql模块：

 

 

代码：

import pymysql

db = pymysql.connect(host="localhost",
                     user="root",
                     password="123456",
                     db="world",
                     port=3306,
                     charset="utf8")
# 打开数据库连接

cur = db.cursor()
# 使用cursor()方法获取操作游标

sql = "SELECT `ID`, `Name`, `CountryCode`, `District`, `Population` FROM city LIMIT 1;"
# sql语句

try:
    cur.execute(sql)
    # 执行sql语句
    results = cur.fetchall()
    # 获取查询的结果

    for row in results:
        # 遍历结果
        ID = row[0]
        Name = row[1]
        CountryCode = row[2]
        District = row[3]
        Population = row[4]
        print(ID, Name, CountryCode, District, Population)
except Exception as e:
    raise e
finally:
    db.commit()
    # 提交
    cur.close()
    # 关闭游标
    db.close()
    # 断开数据库连接