关于文件写入及文件添加的一些问题

Question

我用了这个代码之后不能得到相应的数据

Answer 1

用追加方式，遍历行数据，写入csv：

import akshare as ak 
import pandas as pd 
import time
with open('sh600000.csv','a+',encoding='utf-8') as f:
    df1=ak.stock_zh_a_daily('sh600000',adjust="qfq",start_date='20210501').reset_index()
    df2=df1[['date','open','high','low','close','volume']]
    df2=df2.astype(str)
    for i,row in df2.iterrows():
        f.write(','.join(row.tolist())+'\n')