1 files changed, 32 insertions, 0 deletions
diff --git a/challenge-191/ealvar3z/python/ch-1.py b/challenge-191/ealvar3z/python/ch-1.py
new file mode 100644
index 0000000000..6785f8112e
--- /dev/null
+++ b/challenge-191/ealvar3z/python/ch-1.py
@@ -0,0 +1,32 @@
+#!/usr/bin/env python3
+from functools import reduce
+import unittest
+
+
+class TestSolution(unittest.TestCase):
+    cases = [
+            [1, 2, 3, 4],
+            [1, 2, 0, 5],
+            [2, 6, 3, 1],
+            [4, 5, 2, 3],
+    ]
+
+    def twice_largest(self, lst):
+        s = sorted(lst)
+        head = reduce(lambda x, y: x+y, s[:-1])
+        tail = s[-1]
+
+        if head > tail:
+            return -1
+        else:
+            return 1
+
+    def test_twice_largest(self):
+        self.assertEqual(self.twice_largest(self.cases[0]), -1, 'example 1')
+        self.assertEqual(self.twice_largest(self.cases[1]),  1, 'example 2')
+        self.assertEqual(self.twice_largest(self.cases[2]),  1, 'example 3')
+        self.assertEqual(self.twice_largest(self.cases[3]), -1, 'example 4')
+
+
+if __name__ == "__main__":
+    unittest.main(verbosity=True)