defaultdict() function in python by R4R Team

- The defaultdict in contrast will simply create any items that you try to access (provided of course they do not exist yet).The defaultdict is also a dictionary-like object and provides all methods provided by a dictionary.

Syntax-

collections.defaultdict()

Without defaultdict-

program-

x=dict()
print(x['a'])

output-

x=dict()

TypeError: 'Counter' object is not callable

-In this program, we create a dictionary and try to find the key value direct, so it will give an error.

With defaultdict()-

program-

import collections

x=collections.defaultdict(object)
print(x['a'])

output-

<'object object at 0x0000022EB431C740>

-In this program, we use defaultdict() function to create a dictionary, which not give an error while searching a key value from the dictionary.