Collection in Python - Initializing DefaultDict Objects

 DefaultDict objects can be initialized using DefaultDict() method by passing the data type as an argument.

Example script : 

# Python program to demonstrate

# defaultdict

   

   

from collections import defaultdict

   

   

# Defining the dict

d = defaultdict(int)

   

L = [1, 2, 3, 4, 2, 4, 1, 2]

   

# Iterate through the list

# for keeping the count

for i in L:

       

    # The default value is 0

    # so there is no need to

    # enter the key first

    d[i] += 1

       

print(d)

Then Output :

defaultdict(<class 'int'>, {1: 2, 2: 3, 3: 1, 4: 2})

Source : https://www.geeksforgeeks.org/python-collections-module/