ValueError: DataFrame constructor not properly called! (求大神指教）

Posted 2021-02-18 baoerdeyidongchengbao

#代码设计：步骤一：获取网页信息。步骤二：对数据进行帅选。部署三对数据进行打印
import requests
import re
import pandas as pd
def Gethtml(url):
    try:
        r=requests.get(url)
        r.raise_for_status()
        r.encoding=r.raise_for_status()
        return r.text
    except:
        return ‘网络异常‘
def Getinfo(list,html):
    pattern=re.compile(r‘class="wsod_symbol">(.*?)</a>&nbsp.*?>(.*?)</span>.*
.*?class="wsod_stream">(.*?)</span></td>‘)
    info_text=pattern.findall(html)
    for item in info_text:
        list.append(item)
    return "list"
def InfoList(infolist):
    info_text=pd.DataFrame(infolist)
    print(info_text)
def main():
    infolist=[]
    url=‘http://money.cnn.com/data/dow30/‘
    html=GetHtml(url)
    info=Getinfo(infolist, html)
    InfoList(info)
main()