爬取网易某只股票2017-01到2018-01的数据

import urllib.request
import re
import urllib
import csv
from selenium import webdriver
from lxml import  etree
import requests
x=0
header=['日期','开盘价','最高价','最低价','收盘价','涨跌额','涨跌幅','成交量','成交金额','振幅','换手率']
with open('C:\Users\lenovo\Desktop\mmm.csv', 'a+', newline='', encoding='utf-8') as f:
    writer = csv.writer(f)
    writer.writerow(header)
for i in range(2017,2019):
   url="http://quotes.money.163.com/trade/lsjysj_601939.html?year={}&season=".format(i)
   headers={ 'User-Agent':'Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36'}
   for k in range(1,5):
       ur=url+str(k)
       response=requests.get(ur,headers)
       html=etree.HTML(response.text)
       img=html.xpath('//tr[@class=""]/td')
       ok=html.xpath('//tr[@class="dbrow"]/td')
       x=x+1
       if x==6:
           break
       for i in range(len(img)-11,-1,-11):
           if img[i].text=='2018-02-01'or ok[i-11].text=='2018-02-01':
               break
           data=list(img[j].text for j in range(i,i+11))
           data2 = list(ok[j-11].text for j in range(i, i + 11))
           with open('C:\Users\lenovo\Desktop\mmm.csv', 'a+', newline='', encoding='utf-8') as f:
               writer = csv.writer(f)
               writer.writerow(data)
               writer.writerow(data2)