1 files changed, 35 insertions, 0 deletions
diff --git a/challenge-152/roger-bell-west/python/ch-2.py b/challenge-152/roger-bell-west/python/ch-2.py
new file mode 100755
index 0000000000..52518be11a
--- /dev/null
+++ b/challenge-152/roger-bell-west/python/ch-2.py
@@ -0,0 +1,35 @@
+#! /usr/bin/python3
+
+import unittest
+
+class Rect(object):
+  
+  def __init__(self,_xy1,_xy2):
+    self.xy1=[min(_xy1[0],_xy2[0]),min(_xy1[1],_xy2[1])]
+    self.xy2=[max(_xy1[0],_xy2[0]),max(_xy1[1],_xy2[1])]
+
+  def area(self):
+    area=1
+    for axis in range(2):
+      area *= self.xy2[axis]-self.xy1[axis]
+    return area
+
+  def overlap(self,other):
+    area=1
+    for axis in range(2):
+      area *= max(0,
+                  min(self.xy2[axis],other.xy2[axis])-
+                  max(self.xy1[axis],other.xy1[axis]))
+    return area
+  
+  def fullarea(self,other):
+    return self.area()+other.area()-self.overlap(other)
+
+class TestRect(unittest.TestCase):
+        def test_ex1(self):
+          self.assertEqual(Rect([-1,0],[2,2]).fullarea(Rect([0,-1],[4,4])),22,'example 1')
+
+        def test_ex2(self):
+          self.assertEqual(Rect([-3,-1],[1,3]).fullarea(Rect([-1,-3],[2,2])),25,'example 1')
+
+unittest.main()