Completed the about_generators koan

python2/koans/about_generators.py

@@ -19,7 +19,7 @@ def test_generating_values_on_the_fly(self):
                 n in ['crunchy', 'veggie', 'danish'])
         for bacon in bacon_generator:
             result.append(bacon)
-        self.assertEqual(__, result)
+        self.assertEqual(['crunchy bacon', 'veggie bacon', 'danish bacon'], result)
 
     def test_generators_are_different_to_list_comprehensions(self):
         num_list = [x * 2 for x in range(1, 3)]
@@ -28,7 +28,7 @@ def test_generators_are_different_to_list_comprehensions(self):
         self.assertEqual(2, num_list[0])
 
         # A generator has to be iterated through.
-        self.assertEqual(__, list(num_generator)[0])
+        self.assertEqual(2, list(num_generator)[0])
 
         # Both list comprehensions and generators can be iterated
         # though. However, a generator function is only called on the
@@ -43,8 +43,8 @@ def test_generator_expressions_are_a_one_shot_deal(self):
         attempt1 = list(dynamite)
         attempt2 = list(dynamite)
 
-        self.assertEqual(__, attempt1)
-        self.assertEqual(__, attempt2)
+        self.assertEqual(['Boom!', 'Boom!', 'Boom!'], attempt1)
+        self.assertEqual([], attempt2)
 
     # ------------------------------------------------------------------
 
@@ -58,12 +58,12 @@ def test_generator_method_will_yield_values_during_iteration(self):
         result = list()
         for item in self.simple_generator_method():
             result.append(item)
-        self.assertEqual(__, result)
+        self.assertEqual(['peanut', 'butter', 'and', 'jelly'], result)
 
     def test_generators_can_be_manually_iterated_and_closed(self):
         result = self.simple_generator_method()
-        self.assertEqual(__, next(result))
-        self.assertEqual(__, next(result))
+        self.assertEqual('peanut', next(result))
+        self.assertEqual('butter', next(result))
         result.close()
 
     # ------------------------------------------------------------------
@@ -74,7 +74,7 @@ def square_me(self, seq):
 
     def test_generator_method_with_parameter(self):
         result = self.square_me(range(2, 5))
-        self.assertEqual(__, list(result))
+        self.assertEqual([4, 9, 16], list(result))
 
     # ------------------------------------------------------------------
 
@@ -87,7 +87,7 @@ def sum_it(self, seq):
 
     def test_generator_keeps_track_of_local_variables(self):
         result = self.sum_it(range(2, 5))
-        self.assertEqual(__, list(result))
+        self.assertEqual([2, 5, 9], list(result))
 
     # ------------------------------------------------------------------
 
@@ -103,17 +103,18 @@ def test_generators_can_act_as_coroutines(self):
         #
         # Hint: Read the "Specification: Sending Values into Generators"
         #       section of http://www.python.org/dev/peps/pep-0342/
+        #I think is because the generator has just been created so it's not prepared yet to receive a value 
         next(generator)
 
-        self.assertEqual(__, generator.send(1 + 2))
+        self.assertEqual(3, generator.send(1 + 2))
 
     def test_before_sending_a_value_to_a_generator_next_must_be_called(self):
         generator = self.coroutine()
 
         try:
             generator.send(1 + 2)
         except TypeError as ex:
-            self.assertMatch(__, ex[0])
+            self.assertMatch("can't send non-None value to a just-started generator", ex[0])
 
     # ------------------------------------------------------------------
 
@@ -131,11 +132,11 @@ def test_generators_can_see_if_they_have_been_called_with_a_value(self):
 
         generator2 = self.yield_tester()
         next(generator2)
-        self.assertEqual(__, next(generator2))
+        self.assertEqual('no value', next(generator2))
 
     def test_send_none_is_equivalent_to_next(self):
         generator = self.yield_tester()
 
         next(generator)
         # 'next(generator)' is exactly equivalent to 'generator.send(None)'
-        self.assertEqual(__, generator.send(None))
+        self.assertEqual('no value', generator.send(None))