title: Python create multi-dimensional dictionary using list comprehensions
body: <p>I have dictionary in the following format:</p>
  
  <pre><code>   dictionary = {'key' : ('value', row_number, col_number)}
  </code></pre>
  
  <p>I want that dictionary converted to below format:</p>
  
  <pre><code>   converted_dict = {'key' : {'row':row_number, 'col':col_number}}
  </code></pre>
  
  <p>By using the following code i am getting below error</p>
  
  <pre><code>   dict_list = [(key, dict([('row',value[1]), ('column',value[2])])) for 
                                                 key, value in cleaned_dict]
     converted_dict = dict(dict_list)       
  
  
  
     ValueError: too many values to unpack (expected 2)
  </code></pre>