python3 pandas 读取MySQL数据和插入

# -*- 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()

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;

insert into sum_case (type_id,type_name) values (1,'a'),(2,'b'),(3,'c')

grant select, update,insert on test.* to 'user1'@'localhost' identified by '123456'