Dictionary reference is an unordered arrangement of key and esteem match. It is a holder that contains information, encased inside wavy props. The match i.e., key and esteem is known as thing. The key go in the thing must be one of a kind. The key and the esteem is isolated by a colon(:). This match is known as thing. Things are isolated from each other by a comma(,). Diverse things are encased inside a wavy support and this structures Dictionary. The following is an example. [c]data={1000:'sachin' ,1001:'nair' ,1002:'samuel'} print data [/c] Now compile the code result will be as follows. [c]>>> {1000:'sachin' ,1001:'nair' ,1002:'samuel'} >>> [/c]

To get to dictionary reference components, one can utilize the natural square sections alongside the way to acquire its esteem. The following is an example. [c]dict = {'Name': 'Sachin', 'Age': 37, 'Class': 'First'} print "dict['Name']: ", dict['Name'] print "dict['Age']: ", dict['Age'][/c] Now compile the code result will be as follows. [c]dict['Name']: Sachin dict['Age']: 37[/c]

The thing key-esteem match can be redesigned. Redesigning implies new thing can be included. The qualities can be adjusted. The following is an example. [c]dict = {'Name': 'Sachin', 'Age': 37, 'Class': 'First'} dict['Age'] = 38; # update existing entry dict['School'] = "DPS School"; # Add new entry print "dict['Age']: ", dict['Age'] print "dict['School']: ", dict['School'][/c] Now compile the code result will be as follows. [c] dict['Age']: 38 dict['School']: DPS School [/c]

Client can either evacuate singular word reference components or clear the whole substance of a lexicon. Client can likewise erase whole word reference in a solitary operation. The following is an example. [c]dict = {'Name': 'Sachin', 'Age': 37, 'Class': 'First'} del dict['Name']; # remove entry with key 'Name' dict.clear(); # remove all entries in dict del dict ; # delete entire dictionary print "dict['Age']: ", dict['Age'] print "dict['School']: ", dict['School'][/c] Now compile the code result will be as follows. [c]dict['Age']: Traceback (most recent call last): File "test.py", line 8, in <module> print "dict['Age']: ", dict['Age']; TypeError: 'type' object is unsubscriptable[/c]

• The dict.remove is the method to vanish an elements from the dictionary.
• The dict.values is the method to return the values from the dictionary.
• The dict.items is the method to get the key and value pair from the dictioanry.