enum is data type which links name to an index they are useful to represent closed set of options in [ ]from enum import enum class qhbrowseraction(enum)query_button_clicked save_button_clicked date_changed qh_name_changed slider_moved qhbrowseraction date_changed namea value out[ ]('date_changed' in [ ]a_next qhbrowseraction( value+ a_next out[ ]in [ ]if a_next =qhbrowseraction qh_name_changedprint('in state {}format(a_next value)in state containers container data types in python are dedicated to store multiple variables of various type the basic container types areliststuplessetsdictionaries lists in [ ]my_list [ ' 'truemy_list out[ ][ ' 'truelists are -indexed and elements are accessed by square bracket in [ ]my_list[ out[ ] lists are mutable