Each new term in the Fibonacci sequence is generated by adding the previous two terms. By starting with 0 and 1, the first 12 terms will be:
0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, ...
By considering the terms in the Fibonacci sequence whose values do not exceed four million, find the sum of the even-valued terms.
In [5]:
# YOUR CODE HERE
def fibo_even_sum(num):
even_sum = 0
# define the first two values ad Fibonacci sequance and call x and y
x, y = 0, 1
#loop through x and y addint the previous ters to gain the next term
while y < num:
x, y = y, x + y
#Take turnd from loop disregard odd values the sum the even ones
if y % 2 == 0:
even_sum = even_sum + y
#return the values from loop
return even_sum
#print the total
print (fibo_even_sum(4000000))
In [1]:
# This cell will be used for grading, leave it at the end of the notebook.