Question

我使用beautifulsoup4来获取股票数据并发送到python中的电子表格。我遇到的问题是我不能让我的循环跳过返回None的属性。所以我需要的是将空值添加到行的代码属性将不返回。

//my dictionay for storing data
data = {
    'Fiscal Quarter End' : [],
    'Date Reported' : [],
    'Earnings Per Share' : [],
    'Consensus EPS* Forecast' : [],
    '% Surprise' : []
}

    url = ""
    html = requests.get(url)
    data = html.text
    soup = bs4.BeautifulSoup(data)


    table = soup.find("div", class_="genTable")
    for row in table.find_all('tr')[1:]:

        if row.has_attr('tr'):

            cols = row.find_all("td")
            data['Fiscal Quarter End'].append( cols[0].get_text() )
            data['Date Reported'].append( cols[1].get_text() )
            data['Earnings Per Share'].append( cols[2].get_text() )
            data['Consensus EPS* Forecast'].append( cols[3].get_text() )
            data['% Surprise'].append( cols[4].get_text() )
        else:
            //where i need to add in the empty 'n/a' values
            data['Fiscal Quarter End'].append() 
            data['Date Reported'].append()
            data['Earnings Per Share'].append() 
            data['Consensus EPS* Forecast'].append()
            data['% Surprise'].append()

Answer 1

您已将data变量用于两个不同的事物。第二种用法覆盖了你的字典。在html.text的调用中使用soup.find()更为简单。请尝试以下方法：

import requests
import bs4    

# My dictionary for storing data
data = {
    'Fiscal Quarter End' : [],
    'Date Reported' : [],
    'Earnings Per Share' : [],
    'Consensus EPS* Forecast' : [],
    '% Surprise' : []
    }

empty = 'n/a'
url = ""
html = requests.get(url)
soup = bs4.BeautifulSoup(html.text, "html.parser")
table = soup.find("div", class_="genTable")
rows = []

if table:
    rows = table.find_all('tr')[1:]

    for row in rows:
        cols = row.find_all("td")
        data['Fiscal Quarter End'].append(cols[0].get_text())
        data['Date Reported'].append(cols[1].get_text())
        data['Earnings Per Share'].append(cols[2].get_text())
        data['Consensus EPS* Forecast'].append(cols[3].get_text())
        data['% Surprise'].append(cols[4].get_text())

if len(rows) == 0:
    # Add in the empty 'n/a' values if no columns found
    data['Fiscal Quarter End'].append(empty) 
    data['Date Reported'].append(empty)
    data['Earnings Per Share'].append(empty) 
    data['Consensus EPS* Forecast'].append(empty)
    data['% Surprise'].append(empty)

如果table或rows为空，data将保留以下内容：

{'Date Reported': ['n/a'], 'Earnings Per Share': ['n/a'], '% Surprise': ['n/a'], 'Consensus EPS* Forecast': ['n/a'], 'Fiscal Quarter End': ['n/a']}

Python句柄＆＃39; NoneType＆＃39;对象没有属性＆＃39; find_all＆＃39; if else语句出错

1 个答案: