Updated 3.3 ReadingNote in .md file and HW8.py

Scott_Submissions/HW8.py

@@ -0,0 +1,85 @@
+# Create a class that implements a context manager as described in 3.3.9.  
+# The context manager should keep track of an array of banana emojis.  
+# The class should be able to be used with with: so it adds a banana to the list, and upon exit, removes a banana from the list.
+
+# class BananaManager:
+#     def __init__(self, bananas):
+#         self.bananas = bananas
+
+#     def __enter__(self):
+#         self.bananas.append("🍌")
+#         return self.bananas
+
+#     def __exit__(self, exc_type, exc_value, traceback):
+#         self.bananas.pop()
+
+# # Usage of the banana manager
+# banana_list = ["🍌", "🍌"]
+# print("Before with statement:", banana_list)
+
+# with BananaManager(banana_list) as adding_bananas:
+#     print("Inside with statement:", adding_bananas)
+
+# print("After with statement:", banana_list)
+
+
+
+# Questions: can you use a with block inside of another with block?  (You might have to get creative for this to work.). 
+# If you can make that work, how many bananas are in the list?
+
+# class BananaManager:
+#     def __init__(self, bananas):
+#         self.bananas = bananas
+
+#     def __enter__(self):
+#         self.bananas.append("🍌")
+#         return self.bananas
+
+#     def __exit__(self, exc_type, exc_value, traceback):
+#         self.bananas.pop()
+
+# # Usage of the banana manager
+# banana_list = ["🍌", "🍌"]
+# print("Before with statement:", banana_list)
+
+# with BananaManager(banana_list) as adding_bananas:
+#     print("Inside first with statement:", adding_bananas)
+
+#     with BananaManager(adding_bananas) as inside_bananas:
+#         print("Inside second with statement:", inside_bananas)
+
+# print("After with statement:", banana_list)
+
+
+
+# Another question: can you structure the program so that you can get the class to have more than 0 bananas *outside* of a with block?
+
+class BananaManager:
+    def __init__(self, bananas):
+        self.bananas = bananas
+
+    def __enter__(self):
+        self.bananas.append("🍌")
+        return self.bananas
+
+    def __exit__(self, exc_type, exc_value, traceback):
+        self.bananas.pop()
+
+    def outside_banana(self):
+        self.bananas.append("🍌")
+
+# Usage of the banana manager
+banana_list = ["🍌", "🍌"]
+print("Before with statement:", banana_list)
+
+bananamanager = BananaManager(banana_list)
+bananamanager.outside_banana()  # Add a banana outside of a with block
+print("Outside adding a banana:", banana_list)
+
+with BananaManager(banana_list) as adding_bananas:
+    print("Inside first with statement:", adding_bananas)
+
+    with BananaManager(adding_bananas) as inside_bananas:
+        print("Inside second with statement:", inside_bananas)
+
+print("After with statement:", banana_list)