['Oct-14', 'Nov-14', 'Dec-14', 'Jan-14', 'Feb-15', 'Mar-15', 'Apr-15',
    'May-15', 'Jun-15', 'Jul-15', 'Aug-15', 'Sep-15', 'Oct-15', 'Nov-15',
    'Dec-15', 'Jan-15']
Generate list of months between interval in python