Python Dictionary setdefault() Method with example

Hello dear readers! Welcome back to another edition of our tutorial on Python. In this tutorial guide, we are going to be discussing about the Python Dictionary setdefault() method.

The Python Dictionary setdefault() method is quite similar to get() method, but it will set dict[key] = default if key is not already in dict.

Syntax

The following below is the syntax for Python Dictionary setdefault() method -

dict.setdefault(key,  default = None )

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Parameter Details

• key - Key to be searched for in the dictionary.

• default - This is the value to be returned in case key does not exist.

Return Value

It returns a value for the given key. If the key is not available, then it returns default value None.

Example

The following below is a simple example -

#!/usr/bin/python

dict = {'Name': 'Paul', 'Age': 20}
print "Value : %s" %  dict.setdefault('Age', None)
print "Value : %s" %  dict.setdefault('Sex', None)

Output

Below is the output of the above example -

Value : 20
Value : None

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Alright guys! This is where we are rounding up for this tutorial post. In our next tutorial, we are going to be discussing about the Python Dictionary update() method.

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