1 files changed, 26 insertions, 0 deletions
diff --git a/challenge-112/roger-bell-west/python/ch-2.py b/challenge-112/roger-bell-west/python/ch-2.py
new file mode 100755
index 0000000000..77dcdbca19
--- /dev/null
+++ b/challenge-112/roger-bell-west/python/ch-2.py
@@ -0,0 +1,26 @@
+#! /usr/bin/python3
+
+import unittest
+
+def cs(i):
+  a=0
+  b=1
+  c=0
+  for x in range(i):
+    c=a+b
+    a=b
+    b=c
+  return c
+
+class TestCs(unittest.TestCase):
+
+        def test_ex1(self):
+          self.assertEqual(cs(3),3,'example 1')
+          
+        def test_ex2(self):
+          self.assertEqual(cs(4),5,'example 2')
+          
+        def test_ex3(self):
+          self.assertEqual(cs(20),10946,'example 3')
+
+unittest.main()