教你怎么用Python操作MySql数据库

$ pip3 install PyMySQL

import pymysql

# 创建连接方式1
db = pymysql.connect(host='localhost', 
                     user='root', passWord='root', db='test', port=3306)
# 创建连接方式2
db = pymysql.connect(dsn='localhost:test', user='root', password='root')

cursor = db.cursor()

import pymysql

db = pymysql.connect(host='localhost', user='root', password='root', db='test')

cursor = db.cursor()
sql = '''select * from t_account'''
try:
    cursor.execute(sql)
    # 方式1读取结果集
    rows = cursor.fetchall()
    for row in rows:
        print(row)    
    # 方式2读取结果集
    for i in range(cursor.rowcount):
        result = cursor.fetchone()
        print(result)
except Exception as e:
    raise e
finally:
    cursor.close()

db.close()

import pymysql

db = pymysql.connect(host='localhost', user='root', password='root', db='test')

cursor = db.cursor()
sql = '''insert into t_account values(default,'zhangsan','z',100,'张三')'''
try:
    print(cursor.execute(sql))
    db.commit()
except:
    db.rollback()
finally:
    cursor.close()

db.close()

import pymysql

db = pymysql.connect(host='localhost', user='root', password='root', db='test')

cursor = db.cursor()
sql = '''update t_account set realname = '李四' where id = '5' '''
try:
    print(cursor.execute(sql))
    db.commit()
except:
    db.rollback()
finally:
    cursor.close()

db.close()

import pymysql

db = pymysql.connect(host='localhost', user='root', password='root', db='test')

cursor = db.cursor()
sql = '''delete from t_account where id = '5' '''
try:
    print(cursor.execute(sql))
    db.commit()
except:
    db.rollback()
finally:
    cursor.close()

db.close()

cursor.callproc("存储过程名称")
for result in cursor.fetchall():
    print(result)