Skip to content
Related Articles

Related Articles

Improve Article

How to find the number of arguments in a Python function?

  • Last Updated : 16 Aug, 2021

In this article, we are going to see how to count the number of arguments of a function in Python. We will use the special syntax called *args that is used in the function definition of python. Syntax *args allow us to pass a variable number of arguments to a function. We will use len() function or method in *args in order to count the number of arguments of the function in python.
Example 1: 

Python3




def no_of_argu(*args):
     
    # using len() method in args to count
    return(len(args))
 
 
a = 1
b = 3
 
# arguments passed
n = no_of_argu(1, 2, 4, a)
 
# result printed
print(" The number of arguments are: ", n)

Output :  

The number of arguments passed are: 4

Example 2:

Python3




def no_of_argu(*args):
   
    # using len() method in args to count
    return(len(args))
 
print(no_of_argu(2, 5, 4))
print(no_of_argu(4, 5, 6, 5, 4, 4))
print(no_of_argu(3, 2, 32, 4, 4, 52, 1))
print(no_of_argu(1))

Output : 

3
6
7
1

 Attention geek! Strengthen your foundations with the Python Programming Foundation Course and learn the basics.  

To begin with, your interview preparations Enhance your Data Structures concepts with the Python DS Course. And to begin with your Machine Learning Journey, join the Machine Learning – Basic Level Course




My Personal Notes arrow_drop_up
Recommended Articles
Page :