1 files changed, 29 insertions, 0 deletions
diff --git a/challenge-255/roger-bell-west/python/ch-1.py b/challenge-255/roger-bell-west/python/ch-1.py
new file mode 100755
index 0000000000..4e36a5c865
--- /dev/null
+++ b/challenge-255/roger-bell-west/python/ch-1.py
@@ -0,0 +1,29 @@
+#! /usr/bin/python3
+
+from collections import defaultdict
+
+def oddcharacter(s, t):
+  ss = defaultdict(lambda: 0)
+  for c in s:
+    ss[c] += 1
+  for c in t:
+    if c in ss and ss[c] > 0:
+      ss[c] -= 1
+    else:
+      return c
+  return "@"
+
+import unittest
+
+class TestOddcharacter(unittest.TestCase):
+
+  def test_ex1(self):
+    self.assertEqual(oddcharacter("Perl", "Preel"), "e", 'example 1')
+
+  def test_ex2(self):
+    self.assertEqual(oddcharacter("Weekly", "Weeakly"), "a", 'example 2')
+
+  def test_ex3(self):
+    self.assertEqual(oddcharacter("Box", "Boxy"), "y", 'example 3')
+
+unittest.main()