title: How can I multiply words with numbers in a DataFrame?
body: <p>I have a DataFrame like this: </p>
  
  <pre><code>print(df.words[0])
  [('replacement', 1), ('shaver', 2)]
  
  print(df.words[1])
  [('filter', 2), ('purifier', 1), ('please', 2)]
  </code></pre>
  
  <p>I want to create a new column, called "all_words". The column, should represent the real strings, instead of numbers. </p>
  
  <pre><code>('head', 3) should be: "head,head,head"
  </code></pre>
  
  <p><strong>Desired Output from the example:</strong> </p>
  
  <pre><code>print(df.all_words[0])
  'replacement, shaver, shaver'
  
  
  print(df.all_words[1])
  'filter, filter, purifier, please, please'
  </code></pre>