Python VLC Instance – Deleting Single Media

Find sum and average of List in Python

Last Updated : 27 Dec, 2024

In this article, we will explore various methods to find sum and average of List in Python. The simplest way to do is by using a built-in method sum() and len().

Using sum() and len()

Python provides convenient built-in functions like sum() and len() to quickly calculate the sum and length of list respectively.

Python

a = [10, 20, 30, 40, 50]

# Finding sum using built-in sum() function
totalSum = sum(a)

# Finding average using built-in sum() and len() functions
average = totalSum / len(a) if a else 0  # Avoid division by zero

print("Sum of the list:", totalSum)
print("Average of the list:", average)

Output

Sum of the list: 150
Average of the list: 30.0

Explanation:

sum(a): Calculates sum of numbers in the list ‘a‘.
len(a): Returns number of elements in the list ‘a‘.
average = totalSum / len(a): This compute the average. We also check if the list is not empty to avoid division by zero.

Using Loop

If we’d like to manually calculate the sum and average without using built-in functions then we can find this by looping through the list.

Python

a = [10, 20, 30, 40, 50]

# To store the total sum
totalSum = 0

# To store length of list 'a'
length = 0

# Finding sum using a loop
for val in a:
    totalSum += val
    length += 1

# Finding average manually
average = totalSum / length if a else 0  # Avoid division by zero

print("Sum of the list:", totalSum)
print("Average of the list:", average)

Output

Sum of the list: 150
Average of the list: 30.0

Explanation: We iterate over the list ‘a’ and calculate their sum and length. And to find the average divide total calculated sum by length of list.

Python VLC Instance – Deleting Single Media

D

deepanshumehra1410

Improve

Article Tags :

Practice Tags :

Similar Reads

Python - Average digits count in a List

Given a list of elements extract the average digit count in List. Input : test_list = [34, 2345, 23, 456, 2, 23, 456787] Output : 2.857142857142857 Explanation : Average of all digit count. [2+4+2+3+1+2+6 = 20, 20/7 = 2.857142857142857] Input : test_list = [34, 1, 456]Output : 2.0 Explanation : Aver

Python | Average of two lists

The problem of finding a average values in a list is quite common. But sometimes this problem can be extended in two lists and hence becomes a modified problem. This article discusses shorthands by which this task can be performed easily. Letâ€™s discuss certain ways in which this problem can be solve

Python | Average String length in list

Sometimes, while working with data, we can have a problem in which we need to gather information of average length of String data in list. This kind of information might be useful in Data Science domain. Let's discuss certain ways in which this task can be performed. Method #1 : Using list comprehen

Python program to find sum of elements in list

In this article, we will explore various method to find sum of elements in list. The simplest and quickest way to do this is by using the sum() function. Using sum()The sum() function is a built-in method to sum all elements in a list. [GFGTABS] Python a = [10, 20, 30, 40] res = sum(a) print(res) [/

Column Average in Record List - Python

Given a list of records where each record contains multiple fields, the task is to compute the average of a specific column. Each record is represented as a dictionary or a list, and the goal is to extract values from the chosen column and calculate their average. Letâ€™s explore different methods to

Python - Rear elements Average in List

Sometimes, while working with data, we can have a problem in which we need to perform the mean of all the rear elements that come after K. This can be an application in Mathematics and Data Science domain. Let us discuss certain ways in which this task can be performed.Â Method #1 : Using sum() + li

Find the size of a list - Python

In Python, a list is a collection data type that can store elements in an ordered manner and can also have duplicate elements. The size of a list means the amount of memory (in bytes) occupied by a list object. In this article, we will learn various ways to get the size of a python list. 1.Using get

Python program to find Cumulative sum of a list

Calculating the cumulative sum of a list means finding the running total of the elements as we move through the list. In this article, we will explore How to find the cumulative sum of a list. Using itertools.accumulate()This is the most efficient method for calculating cumulative sums. itertools mo

Python | Find number of lists in a tuple

Given a tuple of lists, the task is to find number of lists in a tuple. This is a very basic problem but can be useful while making some utility application. Method #1: Using len C/C++ Code # Python code to find number of list in a tuple # Initial list Input1 = ([1, 2, 3, 4], [5, 6, 7, 8]) Input2 =

Python | Record elements Average in List

Given a list of tuples, write a program to find average of similar tuples in list. Examples: Input: [('Geeks', 10), ('For', 10), ('Geeks', 2), ('For', 9), ('Geeks', 10)] Output: Resultant list of tuples: [('For', 9.5), ('Geeks', 7.333333333333333)] Input: [('Akshat', 10), ('Garg', 10), ('Akshat', 2)