title: python: print values from a dictionary
body: <pre><code>generic_drugs_mapping={'MORPHINE':[86],
                         'OXYCODONE':[87],
                         'OXYMORPHONE':[99],
                         'METHADONE':[82],
                         'BUPRENORPHINE':[28],
                         'HYDROMORPHONE':[54],
                         'CODEINE':[37],
                         'HYDROCODONE':[55]}
  </code></pre>
  
  <p>How do I return <code>86</code>?</p>
  
  <p>This does not seem to work:</p>
  
  <pre><code>print generic_drugs_mapping['MORPHINE'[0]]
  </code></pre>