title: Python Regex - detecting and deleting email address from a long string
body: <p>I have long string containing email addresses. Most of them have duplicates in the form: </p>
  
  <pre><code>addresses = 'zzz@zzz.com &lt;zzz@zzz.com&gt;, aaaaa@aaa.co.uk &lt;aaaaa@aaa.co.uk&gt;, bbb@bbb.org &lt;bbb@bbb.org&gt;,'
  </code></pre>
  
  <p>etc</p>
  
  <p>I would like to erase the duplicate inside &lt;>, so the string would be </p>
  
  <pre><code>addresses = 'zzz@zzz.com, aaaaa@aaa.co.uk, bbb@bbb.org,' 
  </code></pre>
  
  <p>etc</p>
  
  <p>Unfortunately I cannot put together proper Regex in Python 3. Can anybody help me?</p>