defaultdict

In Python, defaultdict is a data type that belongs to the collections module. It is a dictionary subclass that is used to return a dictionary-like object.

Syntax

collections.defaultdict(default_factory)

• default_factory: It gives the default value for the dictionary object.

Example

The following example demonstrates the defaultdict data type:

from collections import defaultdict

def default_value():
  return "Not Declared"

myDefaultDict = defaultdict(default_value)

myDefaultDict["first"] = 100
myDefaultDict["second"] = 90

print(myDefaultDict["first"])
print(myDefaultDict["second"])
print(myDefaultDict["third"])

Here is the output for the above code:

100
90
Not Declared

Codebyte Example

Run the following codeblock and explore more about the defaultdict data type:

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