title: Scrapy extract only a portion of the url
body: <p>I have the following spider:</p>
  
  <pre><code>start_urls = ['https://www.youtube.com/user/ZaidAliT/videos']
  
  def parse_question(self, response):
      yield {
          'title': response.css('h1 span::text').extract()[0],
          'views': response.css('div .watch-view-count::text').extract()[0],
          'link': response.url,
      }
  </code></pre>
  
  <p>Currently when i parse, i get the entire links of the channel in the <code>response.url</code> like the following:</p>
  
  <pre><code>"link": "https://www.youtube.com/watch?v=qEybDk00rJE"
  </code></pre>
  
  <p>How do i modify this such that i extract only the <code>qEybDk00rJE</code> part from the url?</p>