我是新来的，我想抓取一个网页的源代码作为教程，我得到了beautifulsoup安装，请求安装。一开始我想抓取源码，我做的这个抓取工作是从"https:/pythonhow.comexample.html。".我没有做任何违法的事情，我想这个网站也是为了这个目的而建立的.这是我的代码。
import requests
from bs4 import BeautifulSoup
r=requests.get("http://pythonhow.com/example.html")
c=r.content
c
我得到了mod安全错误。
b'<head><title>Not Acceptable!</title></head><body><h1>Not Acceptable!</h1><p>An appropriate representation of the requested resource could not be found on this server. This error was generated by Mod_Security.</p></body></html>'
谢谢所有和我打交道的人，尊敬的各位。
你可以通过为请求提供一个用户代理来轻松解决这个问题。通过这样做，网站会认为有人在使用浏览器访问网站。
下面是你要使用的代码。
import requests
from bs4 import BeautifulSoup
headers = {
'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:55.0) Gecko/20100101 Firefox/55.0',
}
r = requests.get("http://pythonhow.com/example.html", headers=headers)
c = r.content
print(c)
这将给你带来预期的输出
b'<!DOCTYPE html>\n<html>\n<head>\n<style>\ndiv.cities {\n background-color:black;\n color:white;\n margin:20px;\n padding:20px;\n} \n</style>\n</head>\n<body>\n<h1 align="center"> Here are three big cities </h1>\n<div class="cities">\n<h2>London</h2>\n<p>London is the capital of England and it\'s been a British settlement since 2000 years ago. </p>\n</div>\n<div class="cities">\n<h2>Paris</h2>\n<p>Paris is the capital city of France. It was declared capital since 508.</p>\n</div>\n<div class="cities">\n<h2>Tokyo</h2>\n<p>Tokyo is the capital of Japan and one of the most populated cities in the world.</p>\n</div>\n</body>\n</html>'
而不是请求，尝试使用 url module
from urllib.request import urlopen
page = urlopen("http://pythonhow.com/example.html")
page.read()