# Python | Mean of tuple list

• Last Updated : 18 Oct, 2019

Sometimes, while working with Python tuple list, we can have a problem in which we need to find the average of tuple values in the list. This problem has the possible application in many domains including mathematics. Let’s discuss certain ways in which this task can be performed.

Method #1 : Using loops
The first approach that can be thought of to solve this problem can be a brute force approach in which we just loop each tuple to add element and then just divide it by number of tuples in the list.

 # Python3 code to demonstrate working of# Mean of tuple list# Using loops  # Initializing listtest_list = [(1, 4, 5), (7, 8), (2, 4, 10)]  # printing original listprint("The original list is : " + str(test_list))  # Average of tuple list# Using loopssum = 0for sub in test_list:    for i in sub:        sum = sum + ires = sum / len(test_list)  # printing resultprint("The mean of tuple list is : " + str(res))
Output :
The original list is : [(1, 4, 5), (7, 8), (2, 4, 10)]
The mean of tuple list is : 13.666666666666666

Method #2 : Using chain() + sum()
In order to reduce the line of codes, the chain() functionality can be used so that all the elements can be extracted and then can be added using sum().

 # Python3 code to demonstrate working of# Mean of tuple list# Using chain() + sum()from itertools import chain  # Initializing listtest_list = [(1, 4, 5), (7, 8), (2, 4, 10)]  # printing original listprint("The original list is : " + str(test_list))  # Average of tuple list# Using chain() + sum()temp = list(chain(*test_list)) res = sum(temp)/ len(test_list)  # printing resultprint("The mean of tuple list is : " + str(res))
Output :
The original list is : [(1, 4, 5), (7, 8), (2, 4, 10)]
The mean of tuple list is : 13.666666666666666

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