PyMySQL连接MySQL数据库

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

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