我的python爬虫的循环遍历为什么报错？

Question

请麻烦帮我看一下“for li in res['result']['data']:”循环遍历。
报错“'NoneType' object is not subscriptable“

def collect():
  url = 'https://datacenter-web.eastmoney.com/api/data/v1/get'
  r = requests.get(url)
  headers = {'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/109.0.0.0 Safari/537.36'}
  params = {
      'sortColumns' : ['LISTING_DATE','SECURITY_CODE'],
      'sortTypes' :   ['-1', ' -1'],
      'pageSize': '10000',
      'pageNumber' : '1',
      'reportName' :  'RPTA_APP_IPOAPPLY',
      'quoteColumns': ['f2~01~SECURITY_CODE','f14~01~SECURITY_CODE'],
      'quoteType': '0',
      'columns': 'ALL',
      'source': 'WEB',
      'client': 'WEB',
      'filter': f'''((APPLY_DATE>'2010-01-01')(|@APPLY_DATE='NULL'))((LISTING_DATE>'2010-01-01')(|@LISTING_DATE='NULL'))(TRADE_MARKET_CODE!'069001017')'''
      #日期这个问题先不解决了吧
    }
  res = requests.get(url = url, headers = headers, params= params).json()
  for li in res['result']['data']:
    secid= '0'+'.' + li['SECUCODE'][:6] if li['SECUCODE'][-2:] == 'SZ' else '1'+'.' + li['SECUCODE'][:6]
    urlLi = 'https://push2.eastmoney.com/api/qt/stock/get'
    paramsLi ={
        'fltt': '2',
        'invt': '2',
        'fields': 'f78,f58,f59,f86,f43,f169,f170,f44,f45,f46,f47,f116,f117,f162,f167,f60,f137,f469,f434,f470,f459,f471,f292',
        'secid' : secid
    }
    resLi = requests.get(url = urlLi, headers = headers, params= paramsLi).json()
    dic = {
      '序号' : res['result']['data'].index(li) + 1,
      '股票代码' : li['SECURITY_CODE'],
      '股票简称' : li['SECURITY_NAME'],
      '发行价' : li['ISSUE_PRICE'],
      '最新价' : resLi['data']['f43'],
      '网上发⾏中签率(%)' : li['ONLINE_ISSUE_LWR'],
      '网上有效申购股数(万股)' : li['ONLINE_VA_SHARES'],
      '网上有效申购户数(户)' : li['ONLINE_VA_NUM'],
      '⽹上超额认购' : li['ONLINE_ES_MULTIPLE'],
      '线下配售中签率(%)' : li['OFFLINE_VAP_RATIO'],
      '线下有效申购股数(万股)' : li['OFFLINE_VATS'],
      '线下有效申购户数(户)' : li['OFFLINE_VAP_OBJECT'],
      '线下配售认购倍数' : li['OFFLINE_VAS_MULTIPLE'],
      '总发⾏数量(万股)' : li['TOTAL_ISSUE_NUM'],
      '开盘溢价(%)' : li['LD_OPEN_PREMIUM'],
      '⾸⽇涨幅(%)' : li['LD_CLOSE_CHANGE'],
    }
    print(dic)
    csv.writer(open('IPO Earning.csv','a',encoding = 'utf-8-sig', newline='')).writerow(dic.values())
if  __name__ == '__main__':
  csv.writer(open('IPO Earning.csv','a',encoding = 'utf-8-sig', newline='')).writerow(['序号','股票代码', '股票简称', '发行价' , '最新价',  '网上发⾏中签率(%)', '网上有效申购股数(万股)','网上有效申购户数(户)','⽹上超额认购', '线下配售中签率(%)','线下有效申购股数(万股)','线下有效申购户数(户)','线下配售认购倍数', '总发⾏数量(万股)','开盘溢价(%)', '⾸⽇涨幅(%)'])
  collect()

Answer 1

你把res打印出来看下。应该是request.get方法没有获取到数据，或者获取的数据格式和你想要的不一致，所以报错了。如果是获取的数据不对，检查下您的请求参数是否正确。