title: Array with the names of my Dataframes in Pandas
body: <p>I wanna get the array with the names of my Datafremes:</p>
  <pre><code>#Dataframes have already been created
  
  df1.name = 'df1'
  df2.name = 'df2'
  df3.name = 'df3'
  
  dataframes = df1, df2, df3
  
  array_names_of_dfs = [[] for a in dataframes ]
  array_names_of_dfs = [[array_names_of_dfs.append([i.name]) for i in dataframes] 
  </code></pre>
  <p>And I would like to get such array:</p>
  <pre><code>[[df1], [df2], [df3]]
  </code></pre>
  <p>But now the output is:</p>
  <pre><code>[None, None, None]
  </code></pre>
  <p>How can I do this?</p>