title: Why "SyntaxError: invalid syntax. Perhaps you forgot a comma?"
body: <p>I'm trying to execute the following code, but I keep on getting this error. I've checked tutorials of &quot;map&quot; &amp; &quot;lambda&quot; over and again, but couldn't discover the issue. Kindly help.</p>
  <pre class="lang-py prettyprint-override"><code>import re
  import requests
  
  source = requests.get('https://www.youtube.com/c/CoinBureau/videos').text
  URLs = re.findall(&quot;/watch\?v=\w*&quot;, source)
  URL_IDs = list(map(lamda x: x[9:], URLs))
  </code></pre>