1 files changed, 40 insertions, 0 deletions
diff --git a/challenge-082/roger-bell-west/python/ch-1.py b/challenge-082/roger-bell-west/python/ch-1.py
new file mode 100755
index 0000000000..88e8cc4399
--- /dev/null
+++ b/challenge-082/roger-bell-west/python/ch-1.py
@@ -0,0 +1,40 @@
+#! /usr/bin/python3
+
+import unittest
+from math import sqrt
+
+def factor(n):
+    o=set()
+    o.add(1)
+    o.add(n)
+    for i in range(2,int(sqrt(n))+1):
+        if (n % i == 0):
+          o.add(int(n/i))
+          o.add(i)
+    return o
+
+def commonfactor(*fs):
+    f=list(map(factor,fs))
+    s=f.pop();
+    while (f):
+        s = s & f.pop()
+    return sorted(s)
+
+class TestCf(unittest.TestCase):
+
+    def test_f1(self):
+        self.assertEqual(factor(12),set((1,2,3,4,6,12)),'twelve')
+
+    def test_f2(self):
+        self.assertEqual(factor(18),set((1,2,3,6,9,18)),'eighteen')
+
+    def test_f3(self):
+        self.assertEqual(factor(23),set((1,23)),'twenty-three')
+
+    def test_cf1(self):
+        self.assertEqual(commonfactor(12,18),[1,2,3,6],'twelve-eighteen')
+
+    def test_cf2(self):
+        self.assertEqual(commonfactor(18,23),[1],'twelve-twentythree')
+
+unittest.main()