完美解決爬蟲時遇到的'NoneType' object has no attribute 'find'或'NoneType' object has no attribute 'find_all'問題

在網上看到了一個爬蟲教程，就跟着學了起來，出現了點問題：‘NoneType’ object has no attribute ‘find’；

問題說明

我是一個剛入門的小白，剛研究了點爬蟲，我覺得這個問題其實就是沒有找到相應的html element（網頁元素），所以沒有相應的元素方法，所以報錯“no attribute”。
只要我們準確的找到相應的元素，就可以用BeautifulSoup中的方法進行解析了。

下圖是問題出現的地方：

打印出來的type(data)爲nonetype，所以就是沒有找到元素。於是我們可以使用另一種尋找元素的方法

data = body.find('div',attrs={'id':'7d'})

用屬性標籤attrs來尋找 id=7d 或class=c7d就可以了

怎麼設置文件保存目錄

文件目錄我們可以自己設置保存位置，代碼如下：

def write_data(data,name):
    file_name =name
    with open(file_name,'a',errors='ignore',newline='') as f:
        f_csv =csv.writer(f)
        f_csv.writerows(data)

if __name__ == '__main__':
    url = 'http://www.weather.com.cn/weather/101190401.shtml'
    html = get_content(url)
    result = get_data(html)
    write_data(result,'G:\weather.csv')  # 保存的位置我設置在了G盤根目錄

爬取結果

完整代碼

import requests
import time
import csv
import random
import socket
import http.client
import bs4
from bs4 import BeautifulSoup

def get_content(url,data = None):
    header = {
        'Accept':'image/webp,image/apng,image/*,*/*;q=0.8',
        'User-Agent':'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.108 Safari/537.36'
    }
    timeout = random.choice(range(80,180))
    while True:
        try:
            rep = requests.get(url,headers =header,timeout = timeout)
            rep.encoding= 'utf-8'
            break
        except socket.timeout as e:
            print('3:', e)
            time.sleep(random.choice(range(8, 15)))

        except socket.error as e:
            print('4:', e)
            time.sleep(random.choice(range(20, 60)))

        except http.client.BadStatusLine as e:
            print('5:', e)
            time.sleep(random.choice(range(30, 80)))

        except http.client.IncompleteRead as e:
            print('6:', e)
            time.sleep(random.choice(range(5, 15)))
    return rep.text

def get_data(html_text):
    final=[]
    bs = BeautifulSoup(html_text,"html.parser")  # 創建BS對象
    body = bs.body
    data = body.find('div',attrs={'id':'7d'})
    # data = body.find('div',{'div':'7d'})
    print(type(data))
    ul = data.find('ul')
    li =ul.find_all('li')
    for day in li:
        temp = []
        date = day.find('h1').string
        temp.append(date)
        inf = day.find_all('p')
        temp.append(inf[0].string)
        if inf[1].find('span') is None:
            temperature_highest = None
        else:
            temperature_highest=inf[1].find('span').string
            temperature_highestm  =temperature_highest.replace("℃","")
        temperature_lowest = inf[1].find('i').string
        temperature_lowest = temperature_lowest.replace('℃','')
        temp.append(temperature_highest)
        temp.append(temperature_lowest)
        final.append(temp)
    return final

def write_data(data,name):
    file_name =name
    with open(file_name,'a',errors='ignore',newline='') as f:
        f_csv =csv.writer(f)
        f_csv.writerows(data)

if __name__ == '__main__':
    url = 'http://www.weather.com.cn/weather/101190401.shtml'
    html = get_content(url)
    result = get_data(html)
    write_data(result,'G:\weather.csv')

希望幫大家解決一定的問題。。。。