Python : *args vs **kwargs in python.

 

Both *args and **kwargs are are special syntaxes used to represent multiple arguments. Both *args and **kwargs are used by convention, a diffrent name can be used for both. 

Arguments are always passed as reference in python, 

Example: Since arguments are always passed as reference in python we can notice a change in argument value within the function will be permanently impacted to that corresponding variable or function.

def appendNumber(arr):

   arr.append(4)

arr = [1, 2, 3]

print(arr)  #Output: => [1, 2, 3]

appendNumber(arr)

print(arr)  #Output: => [1, 2, 3, 4]