Python | Passing dictionary as keyword arguments

Many times while working with Python dictionaries, due to advent of OOP Paradigm, Modularity is focussed in different facets of programming. Hence there can be many use cases in which we require to pass a dictionary as argument to a function. But this required the unpacking of dictionary keys as arguments and it’s values as argument values. Let’s discuss a method in which this can be performed.

Method : Using ** ( splat ) operator
This operator is used to unpack a dictionary, and while passing in a function this can possibly unpack a dictionary and achieve the required task of mapping the keys to arguments and it’s values to argument values.

filter_none

edit
close

play_arrow

link
brightness_4
code

# Python3 code to demonstrate working of
# Passing dictionary as keyword arguments
# Using ** ( splat ) operator
  
# Helper function to demo this task
def test_func(a = 4, b = 5):
    print("The value of a is : " + str(a))
    print("The value of b is : " + str(b))
  
# initializing dictionary
test_dict = {'a' : 1, 'b' : 2}
  
# printing original dictionary
print("The original dictionary is : " + str(test_dict))
  
# Testing with default values 
print("The default function call yields : ")
test_func()
  
print("\r")
  
# Passing dictionary as keyword arguments
# Using ** ( splat ) operator
print("The function values with splat operator unpacking : ")
test_func(**test_dict)

chevron_right


Output :

The original dictionary is : {'a': 1, 'b': 2}
The default function call yields : 
The value of a is : 4
The value of b is : 5

The function values with splat operator unpacking : 
The value of a is : 1
The value of b is : 2


My Personal Notes arrow_drop_up

Check out this Author's contributed articles.

If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.




Article Tags :

Be the First to upvote.


Please write to us at contribute@geeksforgeeks.org to report any issue with the above content.