title: How to fix the Forbidden: received 403 HTTP response in praw?
body: <p>I want to collect some title of posts on reddit to do analysis. Through constant debugging of my code, I can got some title of posts. Suddenly I got a Forbidden 403 when attempting to use PRAW to collect posts. The online explanation is that:" Accessing the page or resource you were trying to reach is absolutely forbidden. In other words, a 403 error means that you don't have access to whatever you're trying to view".
  Please, tell me what should I do. Thanks</p>
  
  <p>try to add some headers and use time delay</p>
  
  <pre><code>url="https://www.reddit.com"
  
  my_headers=["Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html",
  "Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.96 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)",
  "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/12.1.1 Safari/605.1.15",
  "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.31 (KHTML, like Gecko) Chrome/26.0.1410.64 Safari/537.31"
  ]
  
  def get_content(url,headers):
  
      randdom_header=random.choice(headers)
  
      req=urllib.Request(url)
      req.add_header("User-Agent",randdom_header)           
      req.add_header("Host","www.reddit.com")
      req.add_header("Referer","https://www.reddit.com")
      req.add_header("GET",url)
  
      content=urllib.urlopen(req).read()
      return content
  
  print (get_content(url,my_headers))
  </code></pre>