title: what does this operator means in django `reduce(operator.and_, query_list)`
body: <p>I am reading this questions </p>
  
  <p><a href="https://stackoverflow.com/questions/8510057/constructing-django-filter-queries-dynamically-with-args-and-kwargs?rq=1">Constructing Django filter queries dynamically with args and kwargs</a></p>
  
  <p>I am not able to get what does this operator do</p>
  
  <p><code>filter(reduce(operator.or_, argument_list))</code></p>
  
  <p>or this</p>
  
  <p><code>filter(reduce(operator.and_, query_list))</code></p>