title: Creating a superset of Python dictionaries
body: <p>I have multiple raw data dictionaries that look like this:</p>
  
  <pre><code>raw_data1 = {'Series_Date':['2017-03-10','2017-03-13','2017-03-14','2017-03-15'],'SP':[35.6,56.7,41,41],'1M':[-7.8,56,56,-3.4],'3M':[24,-31,53,5]}
  raw_data2 = {'Series_Date':['2017-03-10','2017-03-13','2017-03-14','2017-03-15'],'SP':[35.6,56.7,41,41],'1M':[-7.8,56,56,-3.4],'3M':[24,-31,53,5]}
  raw_data3 = {'Series_Date':['2017-03-10','2017-03-13','2017-03-14','2017-03-15'],'SP':[35.6,56.7,41,41],'1M':[-7.8,56,56,-3.4],'3M':[24,-31,53,5]}
  </code></pre>
  
  <p>I would like to combine these in a top level dictionary such that the key for each element is raw_data1/raw_data2/raw_data3 etc. and the value is the individual dictionary itself. Any thoughts how I can create such a dictionary?</p>