title: Beautiful Soup - Several Attributes searching
body: <p>With Beautiful Soup, I would like to find in a HTML code all the tags 'a' which have an attribute "class" equal to "button btn-1-small" OR an attribute "class" equal to "button beta-callout btn-1-small". My code is: </p>
  
  <pre><code>alltd = soup.find_all('a', {'class':'button btn-1-small'}, {'class':'button 
  beta-callout btn-1-small'})
  </code></pre>
  
  <p>My code works perfectly when I have only one condition (one value for "class"), but when I want to have two conditions, it doesn't work anymore. </p>
  
  <p>Would you know how to write a condition "OR" ? In order to have either a value for the class either the other one </p>
  
  <p>Thank you very much.</p>
  
  <p>Lcs</p>