title: Pandas add values from DataFrame multiple times
body: <p>The following is easy on SQL but I cannot figure out how to do it on Pandas.</p>
  
  <p>My inputs are:</p>
  
  <pre><code>import pandas as p    
  symb = p.DataFrame(['a', 'b', 'c'], columns=['symb'])
  fld = p.DataFrame(['field1', 'field2', 'field3'], columns=['fld'])
  </code></pre>
  
  <p>I want to be able to get the following DataFrame as output:</p>
  
  <pre><code>symb  fld
  a     field1
  a     field2
  a     field3
  b     field1
  b     field2
  b     field3
  c     field1
  c     field2
  c     field3
  </code></pre>
  
  <p>Any idea on how to get to this result?</p>
  
  <p>Thanks!</p>