To pass a variable-length key-value pair as an argument to a function, Python provides a feature called **kwargs.
kwarg stands for Keyword arguments. It proves to be an efficient solution when one wants to deal with named arguments in their function.
Syntax:
def functionName(**anything): statement(s)
Note: adding ‘**‘ to any term makes it a kwarg parameter. It accepts keywords as arguments.
Example #1:
Python3
# using kwargs # in functions def printKwargs( * * kwargs): print (kwargs) # driver code if __name__ = = "__main__" : printKwargs(Argument_1 = 'gfg' , Argument_2 = 'GFG' ) |
Output:
{'Argument_1': 'gfg', 'Argument_2': 'GFG'}
Example #2:
Python3
# using kwargs # in functions def printValues( * * kwargs): for key, value in kwargs.items(): print ( "The value of {} is {}" . format (key, value)) # driver code if __name__ = = '__main__' : printValues(abbreviation = "GFG" , full_name = "geeksforgeeks" ) |
Output:
The value of abbreviation is GFG The value of full_name is geeksforgeeks
Example #3:
Python3
# using kwargs # in functions # to concatenate def concatenate( * * arguments): # initialising empty string final_str = "" # Iterating over the Python kwargs # dictionary for elements in arguments.values(): final_str + = elements return final_str # driver code if __name__ = = '__main__' : print (concatenate(a = "g" , b = "F" , c = "g" )) |
Output:
gFg
Example #3:
Python3
# using kwargs # to multiply def multiply( * * kwargs): # initialisng answer answer = 1 # Iterating over the Python kwargs # dictionary for elements in kwargs.values(): answer * = elements return answer # driver code if __name__ = = '__main__' : print (multiply(a = 1 , b = 2 , c = 3 , d = 4 , e = 5 )) |
Output:
120
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