def problem_02_fibonacci_sum(limit):
    """ Problem 2: Calculates the sum of all even terms in Fibonacci sequence below limit.

    Args:
        limit (int): The limit below which even numbers are summed.
    """
    fibonacci_sequence = [0, 1]
    while fibonacci_sequence[-1] + fibonacci_sequence[-2] < limit:
        fibonacci_sequence.append(fibonacci_sequence[-1] + fibonacci_sequence[-2])
    sum_even_terms = 0
    for term in fibonacci_sequence:
        if term % 2 == 0:
            sum_even_terms += term
    return sum_even_terms