python3 pandas 读取MySQL数据和插入的实例
发布时间:2020-12-16 21:03:39 所属栏目:Python 来源:网络整理
导读:python 代码如下: # -*- coding:utf-8 -*-import pandas as pdimport pymysqlimport sysfrom sqlalchemy import create_enginedef read_mysql_and_insert(): try: conn = pymysql.connect(host='localhost',user='user1',password='123456',db='test',chars
python 代码如下: # -*- coding:utf-8 -*- import pandas as pd import pymysql import sys from sqlalchemy import create_engine def read_mysql_and_insert(): try: conn = pymysql.connect(host='localhost',user='user1',password='123456',db='test',charset='utf8') except pymysql.err.OperationalError as e: print('Error is '+str(e)) sys.exit() try: engine = create_engine('mysql+pymysql://user1:123456@localhost:3306/test') except sqlalchemy.exc.OperationalError as e: print('Error is '+str(e)) sys.exit() except sqlalchemy.exc.InternalError as e: print('Error is '+str(e)) sys.exit() try: sql = 'select * from sum_case' df = pd.read_sql(sql,con=conn) except pymysql.err.ProgrammingError as e: print('Error is '+str(e)) sys.exit() print(df.head()) df.to_sql(name='sum_case_1',con=engine,if_exists='append',index=False) conn.close() print('ok') if __name__ == '__main__': df = read_mysql_and_insert() 另外需要注意的还有。 1) test数据库里有两个表,建表语句如下: CREATE TABLE `sum_case` ( `type_id` tinyint(2) DEFAULT NULL,`type_name` varchar(5) DEFAULT NULL,KEY `b` (`type_name`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8; CREATE TABLE `sum_case_1` ( `type_id` tinyint(2) DEFAULT NULL,KEY `b` (`type_name`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8; 插入初始数据 insert into sum_case (type_id,type_name) values (1,'a'),(2,'b'),(3,'c') 2)创建user1用户 grant select,update,insert on test.* to 'user1'@'localhost' identified by '123456' 以上这篇python3 pandas 读取MySQL数据和插入的实例就是小编分享给大家的全部内容了,希望能给大家一个参考,也希望大家多多支持编程小技巧。 您可能感兴趣的文章:
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