Iterating Lists

In this lesson, we will explore how to use a for loop to iterate through a list in Python to calculate the average age from a dataset. The process involves summing all the ages and then dividing that total by the number of ages using the built-in len() function.

Step 1: Calculate the Total Sum of Ages

Start by initializing a variable called total to zero. Then, iterate over each element in the list to accumulate the sum of the ages:

ages = [56, 72, 24, 46]
total = 0
for age in ages:
    total += age

During each iteration, the value of the current age is added to the total. After the loop completes, the total sum of the ages becomes 198.

Step 2: Compute the Average Age

After obtaining the total sum, calculate the average by dividing the total by the number of items in the list:

average = total / len(ages)
print(average)
# Output:
# 49.5

That’s all for this lesson. More exciting topics and tutorials will be covered soon—stay tuned for further updates on Python programming techniques!