title: How to get a dictionary of `field_name:field_type` from pandas DF
body: <p>I'm trying to create a simple dictionary of field and field types from a given Dataframe (format: <code>field_name:field_type</code>)</p>
  
  <p>For example, i have this DF.dtypes:</p>
  
  <pre><code>1. name                                 object
  2. On_Time                              object
  3. On_Budget                            object
  4. actual_hr                            float64
  5. Baseline_Start_Date                  datetime64[ns]
  6. Forecast_Start_Date                  datetime64[ns] 
  </code></pre>
  
  <p>I would like to run a function that will return the desired dictionary:</p>
  
  <pre><code>{'NAME':'object', 'On_Time':'object', 'On_Budget':'object', 'actual_hr':'float64', 'Forecast_Start_Date':'datetime64[ns]', 'actual_hr':'datetime64[ns]'}
  </code></pre>