AttributeError: __enter__: requests.get Python

Question

我正在嘗試解析這個網站： https : //decrypt.co/14493/the-12-dapps-of-christmas並獲得一個標題。 但是，我在with requests.get(url) as urlobj:上收到AttributeError: __enter__錯誤。

    def get_title(self, url):
        # gets the title of the article from the web
        print("get_title url: " + url)  //get_title url: https://decrypt.co/14493/the-12-dapps-of-christmas
        with requests.get(url) as urlobj:  //error here
            soup = bs(urlobj.content, "html.parser")
            title = soup.find("h1", class_="Headings__H1-sc-1ibq1fi-0 PostHeader__Heading-sc-1cg3u6k-4 fXgBJm").text
            title = unicodedata.normalize('NFKD', title).encode('ascii', 'ignore').decode("utf-8")
            return title

我的要求.txt：

requests==2.22.0
beautifulsoup4==4.8.1
Flask==1.1.1
flask_wtf==0.14.2
praw==6.4.0
WTForms==2.2.1

py -3.6 -m pip list

給出了這個結果：

我從 PyCharm 的 Python3.6 解釋器或使用py -3.6 TelegramBot.py命令運行程序。

編輯：

我更新請求，現在得到

    title = soup.find("h1", class_="Headings__H1-sc-1ibq1fi-0 PostHeader__Heading-sc-1cg3u6k-4 fXgBJm").text
AttributeError: 'NoneType' object has no attribute 'text'

出錯

title = soup.find("h1", class_="Headings__H1-sc-1ibq1fi-0 PostHeader__Heading-sc-1cg3u6k-4 fXgBJm").text

這是否意味着它找不到具有指定類的對象？

Answer 1

import requests
from bs4 import BeautifulSoup

r = requests.get("https://decrypt.co/14493/the-12-dapps-of-christmas")
soup = BeautifulSoup(r.text, 'html.parser')

for item in soup.findAll("h2", {'class': 'sc-kpOJdX bgcxqD'}):
    print(item.text)

輸出：

1. MyCrypto Heroes
2. Arcane Maps
3. ForkDelta
4. Synthetix
5. Photo Vault
6. NewDex
7. Compound
8. Dice
9. RocketGame
10. Maker
11. Crypto Legends
12. Graphite Docs