python读取数据库

import pandas as pd
import pymysql

#连接数据库
dbconn=pymysql.connect(
    host="0.0.0.0",#ip
    database="stockdb",
    user="cueb",#用户名
    password="cueb",#密码
    port=3306,#端口号
    charset='utf8'
)
s = "select  * from user"；
data = pd.read_sql(s, dbconn)
#print(data)
if len(data) > 1:
        path = "doc/" + tableName + ".xls"
        xlsxdata = pd.DataFrame(data=data)
        xlsxdata.to_excel(path, index=False)