python data structures hash tables are type of data structurein which the address or the index value of the data element is generated from hash function that makes accessing the data fasteras the index value behaves as key for the data value in other wordshash table stores key-value pairs but the key is generated through hashing function sothe search and insertion function of data element becomes much faster as the key values themselves become the index of the array which stores the data in pythonthe dictionary data types represent the implementation of hash tables the keys in the dictionary satisfy the following requirements the keys of the dictionary are hashablei they are generated by hashing functionwhich generates unique result for each unique value supplied to the hash function the order of data elements in dictionary is not fixed sowe see the implementation of hash table by using the dictionary data types as below accessing values in dictionary to access dictionary elementsyou can use the familiar square brackets along with the key to obtain its value declare dictionary dict {'name''zara''age' 'class''first'accessing the dictionary with its key print "dict['name']"dict['name'print "dict['age']"dict['age'when the above code is executedit produces the following resultdict['name']dict['age']zara updating dictionary you can update dictionary by adding new entry or key-value pairmodifying an existing entryor deleting an existing entry as shown below in the simple exampledeclare dictionary dict {'name''zara''age' 'class''first'