Formatted with black

Author: TolstochenkoDaniil

patterns/behavioral/strategy.py

@@ -18,7 +18,9 @@ class DiscountStrategyValidator:  # Descriptor class for check perform
     def validate(obj: Order, value: Callable) -> bool:
         try:
             if obj.price - value(obj) < 0:
-                raise ValueError(f"Discount cannot be applied due to negative price resulting. {value.__name__}")
+                raise ValueError(
+                    f"Discount cannot be applied due to negative price resulting. {value.__name__}"
+                )
         except ValueError as ex:
             print(str(ex))
             return False

patterns/structural/3-tier.py

@@ -7,7 +7,7 @@
 
 
 class Data:
-    """ Data Store Class """
+    """Data Store Class"""
 
     products = {
         "milk": {"price": 1.50, "quantity": 10},
@@ -22,7 +22,7 @@ def __get__(self, obj, klas):
 
 
 class BusinessLogic:
-    """ Business logic holding data store instances """
+    """Business logic holding data store instances"""
 
     data = Data()
 
@@ -36,7 +36,7 @@ def product_information(
 
 
 class Ui:
-    """ UI interaction class """
+    """UI interaction class"""
 
     def __init__(self) -> None:
         self.business_logic = BusinessLogic()

patterns/structural/front_controller.py

@@ -31,7 +31,7 @@ def dispatch(self, request):
 
 
 class RequestController:
-    """ front controller """
+    """front controller"""
 
     def __init__(self):
         self.dispatcher = Dispatcher()
@@ -44,7 +44,7 @@ def dispatch_request(self, request):
 
 
 class Request:
-    """ request """
+    """request"""
 
     mobile_type = "mobile"
     tablet_type = "tablet"