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Lists & loops

Iterate, transform, and combine sequences with readable loop patterns.

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Lists & loops easy

How to Calculate the Sum of List Elements in Python

Iterates over a list with a for loop, accumulates each number into a total variable, and returns the sum of all elements.

sum list loop
Python 
def sum_list_elements(numbers):
    """Return the sum of all elements in a list."""
    total = 0
    for num in numbers:
        total += num
    return total

if __name__ == "__main__":
    sample_list = [1, 2, 3, 4, 5]
    result = sum_list_elements(sample_list)
    print(f"The sum of {sample_list} is {result}")
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