Applied auto pep 8 changes

models/users/customer.py

@@ -1,14 +1,15 @@
 from .user import User
 
+
 class Customer(User):
     '''
         Class constructor to instatiate a customer object
 
         No additional properties are assigned to the customer
     '''
-    def __init__(self, username: str, password: str, firstname: str, 
+
+    def __init__(self, username: str, password: str, firstname: str,
                  lastname: str, email: str, phone: str):
         super().__init__(
             username, password, firstname, lastname, email, phone, "Customer"
         )
-