BF: descriptors must be bound to class, not instance -- Revert "Adjustment to UI and Business logic for injecting dependencies"

This reverts commit 69b507b.

Author: yarikoptic

3-tier.py

@@ -19,8 +19,7 @@ def __get__(self, obj, klas):
 class BusinessLogic(object):
  """ Business logic holding data store instances """
 
- def __init__(self, data):
- self.data = data
+ data = Data()
 
  def product_list(self):
  return self.data['products'].keys()
@@ -32,8 +31,8 @@ def product_information(self, product):
 class Ui(object):
  """ UI interaction class """
 
- def __init__(self, logic):
- self.business_logic = logic
+ def __init__(self):
+ self.business_logic = BusinessLogic()
 
  def get_product_list(self):
  print('PRODUCT LIST:')
@@ -54,9 +53,7 @@ def get_product_information(self, product):
 
 
 def main():
- data = Data()
- logic = BusinessLogic(data)
- ui = Ui(logic)
+ ui = Ui()
  ui.get_product_list()
  ui.get_product_information('cheese')
  ui.get_product_information('eggs')
@@ -72,7 +69,7 @@ def main():
 # cheese
 # eggs
 # milk
-#
+# 
 # (Fetching from Data Store)
 # PRODUCT INFORMATION:
 # Name: Cheese, Price: 2.00, Quantity: 10