1 files changed, 28 insertions, 0 deletions
diff --git a/challenge-343/roger-bell-west/python/ch-1.py b/challenge-343/roger-bell-west/python/ch-1.py
new file mode 100755
index 0000000000..8bff93350b
--- /dev/null
+++ b/challenge-343/roger-bell-west/python/ch-1.py
@@ -0,0 +1,28 @@
+#! /usr/bin/python3
+
+def zerofriend(a):
+  b = min(abs(x) for x in a)
+  if b in a:
+    return b
+  return -b
+
+import unittest
+
+class TestZerofriend(unittest.TestCase):
+
+  def test_ex1(self):
+    self.assertEqual(zerofriend([4, 2, -1, 3, -2]), -1, 'example 1')
+
+  def test_ex2(self):
+    self.assertEqual(zerofriend([-5, 5, -3, 3, -1, 1]), 1, 'example 2')
+
+  def test_ex3(self):
+    self.assertEqual(zerofriend([7, -3, 0, 2, -8]), 0, 'example 3')
+
+  def test_ex4(self):
+    self.assertEqual(zerofriend([-2, -5, -1, -8]), -1, 'example 4')
+
+  def test_ex5(self):
+    self.assertEqual(zerofriend([-2, 2, -4, 4, -1, 1]), 1, 'example 5')
+
+unittest.main()