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Function Details: setdefault

Description

Inserts key with a value of default if key is not in the dictionary.

Extended Description

The setdefault() method returns the value of the specified key. If the key does not exist, it inserts the key with the specified default value and returns the default value. If the key already exists, it returns its value without modifying the dictionary. This method is particularly useful when you want to initialize a key with a default value if it doesn't exist, and then use or modify that value.

Function Signature

dict.setdefault(key: Any, default: Any = None) -> Any

Module: dict

Class: dictionary

Parameters

Parameter List

key: Any
default: Any

Return

Returns the value of the specified key. If the key does not exist, it returns the default value.

Return Type

Any

Output

Explanation

This example shows how setdefault() works with existing and new keys.