Clean-up

src/Python/Problems001-050/Problem002.py

@@ -0,0 +1,41 @@
+#!/usr/bin/env python3
+"""
+Created on 14 Mar 2017
+
+@author: David Doblas Jiménez
+@email: daviddoji@pm.me
+
+Solution for problem 2 of Project Euler
+https://projecteuler.net/problem=2
+"""
+
+from utils import timeit
+
+
+@timeit("Problem 2")
+def compute():
+    """
+    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, ...
+
+    Find the sum of all the even-valued terms in the sequence which do not
+    exceed four million.
+    """
+    ans = 0
+    limit = 4_000_000
+    x, y = 1, 1
+    z = x + y  # Because every third Fibonacci number is even
+    while z <= limit:
+        ans += z
+        x = y + z
+        y = z + x
+        z = x + y
+
+    return ans
+
+
+if __name__ == "__main__":
+
+    print(f"Result for problem 2: {compute()}")