title: How to store a Dataframe in a Dictionary
body: <p>I have a Dataframe that extends column-wise by using a for-loop.
  now I want to store certain "stages" of the evolving DF somehow and I thought it would be the best to use a Dictionary.</p>
  
  <p>to give you a picture:</p>
  
  <pre><code>df_dict={}
  for i in range(1,13):
      df=pd.read_csv('./test.csv').iloc[:,0:i*4-1]
  </code></pre>
  
  <p>so I want to store this as "first stage" of the df:</p>
  
  <pre><code>col1     col2     col3     col4
    1        3        5        7
    2        4        6        8
  </code></pre>
  
  <p>in the "second stage":</p>
  
  <pre><code>col1     col2     col3     col4     col5     col6     col7     col8
    1        3        5        7        9        11       13       15
    2        4        6        8        10       12       14       16    
  </code></pre>
  
  <p>3rd stage contains 12 cols:</p>
  
  <pre><code>col1     col2     col3     col4     col5     col6     col7     col8     ...
    1        3        5        7        9        11       13       15     ...
    2        4        6        8        10       12       14       16     ...
  </code></pre>
  
  <p>Ongoing till the 12th stage contains 48 cols.</p>
  
  <p>So in general I want to store in the Dict these stages where every new stage has 4 more columns.
  And I need to be able to use these different Dataframes seperatly later.</p>
  
  <p>I know that </p>
  
  <pre><code>df_dict.update({i, df})
  </code></pre>
  
  <p>doesn't work since DFs are mutable, but I did not manage to find a way to work around it.</p>
  
  <p>I'm new to Python so please by gentle with me.
  Cheers!</p>
  
  <p><strong>EDIT:</strong>
  I wasn't searching the Idea of how to get variable variables since I allready mentioned that I want to use a Dict, but I was looking for a way of storing my Dataframe in a Dict.</p>