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problems/002_problem.py

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+
+#  Problem 2:
+#  
+#  Each new term in the Fibonacci sequence is 
+#  generated by adding the previous two terms. 
+#  By starting with 1 and 2, the first 10 terms will be:
+#  
+#  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.
+#  
+
+import decorators
+
+@decorators.function_timer
+def main():
+
+	count = 0
+	limit = 4000000
+	n1 = 1
+	n2 = 1
+	sumval = 0
+
+	while count <= limit:
+		
+		n3 = n1 + n2
+		
+		if n3%2 == 0:
+			sumval +=  n3
+		
+		n1 = n2
+		n2 = n3
+		count = n3
+		
+	print("The sum is {}".format(sumval))
+
+main()