下面为大家分享一篇python3 pandas 读取mysql数据和插入的实例，具有很好的参考价值，希望对大家有所帮助。一起过来看看吧
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, `type_name` varchar(5) 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'
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以上就是python3 pandas 读取mysql数据和插入的详细内容。