title: creating dictionary using pandas.dataframe from csv
body: <pre><code>import pandas as pd
  #from pandas import DataFrame 
  
  import datetime
  import pandas.io.data
  from pandas_datareader import data, wb
  
  df = pd.read_csv('testfile.csv')
  grouped = df.groupby(['Arrival','Date', 'Time'])
  for name, group in grouped:
      print (name)
      print(group)
  </code></pre>
  
  <pre>
  AuthorID    Arrival     Departure    Date            Time
  1922        Paris       New York    09/12/10    10:00:00 AM
  1002        Los Angeles California  02/12/09    09:00:00 AM
  1901        Paris       Nigeria     02/09/09    10:00:00 AM
  1922        Paris       New York    02/09/09    10:00:00 AM
  1002        Paris       California  09/12/10    10:00:00 AM
  1099        Paris       China       02/09/09    10:00:00 AM
  1901        Los Angeles Paris       02/12/09    09:00:00 AM
  </pre>
  
  <p>I want to create a dictionary using Arrival and departure, then find author ID than have the same arrival or departure on particular dates and time. </p>