python data structures python maps also called chainmap is type of data structure to manage multiple dictionaries together as one unit the combined dictionary contains the key and value pairs in specific sequence eliminating any duplicate keys the best use of chainmap is to search through multiple dictionaries at time and get the proper key-value pair mapping we also see that these chainmaps behave as stack data structure creating chainmap we create two dictionaries and club them using the chainmap method from the collections library thenwe print the keys and values of the result of the combination of the dictionaries if there are duplicate keysthen only the value from the first key is preserved import collections dict {'day ''mon''day ''tue'dict {'day ''wed''day ''thu'res collections chainmap(dict dict creating single dictionary print(res maps,'\ 'print('keys {}format(list(res keys()))print('values {}format(list(res values()))print(print all the elements from the result print('elements:'for keyval in res items()print('{{}format(keyval)print(find specific value in the result print('day in res{}format(('day in res))print('day in res{}format(('day in res))when the above code is executedit produces the following result