python 读取mysql写入csv文件

最简单的方法

# -*- coding: utf-8 -*-

import pandas as pd
import pymysql

conn = pymysql.connect(host='localhost', user='root', passwd='123', db='your_db', charset='utf8',use_unicode=True)
sql = "select * from your_table"
df = pd.read_sql(sql, con=conn)

df.to_csv("test.csv")
conn.close()```