import pymysql
import pandas as pd
from sqlalchemy import create_engine

# 初始化数据库连接，使用pymysql模块
engine = create_engine("mysql+pymysql://root:root@localhost:3306/python",encoding='utf-8')

# 查询语句，选出testexcel表中的所有数据
sql = """select * from testexcel"""

# read_sql_query的两个参数: sql语句， 数据库连接
df = pd.read_sql_query(sql,con=engine)			# 数据格式为dataframe

# 直接转dataframe
df.to_excel('dsad0.xls',index=False,encoding="utf-8")