Make D.py enterprise ready

D.py

@@ -1,5 +1,11 @@
-def big_D():
-    return "D"
+import lib_d
+
+
+def big_D(verbose=False):
+    d = lib_d.D()
+    if verbose:
+        print("Created D:", d.get_time_created)
+    return d.return_D()
 
 
 def DDDDDDDDDD():

lib_d.py

@@ -0,0 +1,27 @@
+import time
+import unittest
+
+
+class D(object):
+    def __init__(self, name="D"):
+        self.name = name
+        self.time_created = time.time()
+
+    def print_D(self):
+        print(self.return_D())
+        return True
+
+    def return_D(self):
+        return("D")
+
+    def get_time_created(self):
+        return self.time_created
+
+
+class TestD(unittest.TestCase):
+    def test_return_D(self):
+        self.assertEqual(D().return_D(), "D")
+
+
+if __name__ == '__main__':
+    unittest.main()