As mentioned in the introduction, ERP currently offers these 3 sets: EconSet, LowFatSet and Low CarbSet....

 

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As mentioned in the introduction, ERP currently offers these 3 sets: EconSet, LowFatSet and Low CarbSet. Participants can select their preferred Delis to form a Deli Set, as long as the Deli selections fit the criteria of these 3 sets. Figure Q3 shows the specifications of the Deli Set class and its subclasses: EconSet, LowFatSet and LowCarbSet. EconSet MAX DELI: 2 MAX PRICE: 6 SET TYPE: "E" addDelijself, deli: Deli) DellSet (abstract) _name: str deliList: list _init__(self, name: str, deli: Deli) name(self): str price(self): float consumeBy(self): float totalFat(self): float totalCalories(self): float setType(self): str getDeliCodes(self): str addDeli(self, dell: Deli) (abstract) _str_(self): str LowFatSet MAX FAT PERCENT: 10 SET TYPE: "F* addDeli(self, deli: Deli) LowCarbSet MAX CALORIES: 500 SET TYPE: "C" addDeli(self, deli: Deli) Figure Q3 Write a Python class definition for the exception class ERPException - subclass of the Exception class. This class has no added attribute or method. When the application encounters ERP rules violation, your application will raise an exception from this class. (1 mark) (6) Implement the abstract class-DeliSet. The DeliSet class has: TWO instance variables: o name (str): represents the customer defined name for this meal set. _deliList (list): a list containing the participant's selection of Deli objects for this meal set. The constructor performs the following: Initialise_name with the given parameter name. Initialise the deliList as a list with one Deli object, which is the given parameter deli . Getter method for instance variable: _name. Use the property decorator. In addition, define getter methods for the following. Use the property decorator. price: returns the sum of all delis' price. . consumeBy: returns the lowest expiry hours of all delis. o totalFat returns the sum of all delis' fat content. o totalCalories: returns the sum of all delis' calories. The method setType returns the subclasses class variable _SET_TYPE. Hint use type(self). getDeliCodes is a method that returns all the deliCode of the Deli objects in _deliList, separated by commas. E.g.. "H001.CO04,H009" One abstract method: addDeli that has a Deli object as parameter and adds it into the_deliList, only if the following condition is met: There is no duplicated Deli within this DeliSet (ie, cannot have same deliCode). Otherwise, raise ERPException with appropriate message. The _str_method returns a string representation of a DeliSet object, including the name of the DeliSet, price, consumeBy, then follow by the name of the Deli objects. This is an example in the suggested format: Deliset: My Lunch Set Price: $6.00 with Smoked Duck Salad, Strawberry Pudding Consume in 1.5 hrs (9 marks) Write the Python class definitions for the 3 subclasses of Deli Set: EconSet, LowFat Set and Low Carb Set. The EconSet class has: THREE class variables: _MAX_DELI, _MAX_PRICE and _SET_TYPE. Implement the method addDeli by checking the following rules: With this addition, the number of delis should not be more than _MAX_DELI Otherwise, raise ERPException with appropriate message. With this addition, the price of the DeliSet should not be more than _MAX_PRICE. Otherwise, raise ERPException with appropriate message. If the above rules are met, invoke the parent's class addDeli to proceed with the addition (d) The LowFatSet class has: TWO class variables: _MAX_FAT_PERCENT and _SET_TYPE Implement the method addDeli by ensuring that this condition is met . With this addition, the total fat content for the DeliSet should not be more than _MAX_FAT PERCENT. Le, LowFatSet must not have total fat > 10% of total calories. Otherwise, raise ERPException with appropriate message. If the above condition is met, invoke the parent's class addDeli to proceed with the addition. The Low Carb Set class has: TWO class variables: _MAX_CALORIES and _SET_TYPE. Implement the method addDeli by enforcing the following rule: With this addition, the total calories for this DeliSet should not be more than _MAX_CALORIES. Otherwise, raise ERPException with appropriate message. . If the above rule is met, invoke the parent's class addDeli to proceed with the addition (12 marks) Write a main() function with exception handling for the following: Referring to Appendix B for the list of Delis, create the following THREE DeliSet using the information below: . Econ Set, with any name and H006, then add the following Delis in this order: C005 H010 LowFatSet, with any name and H003, then add the following Delis in this order: H002 C003 C001 Low Carb Set, with any name and C004, then add the following Delis in this order. C007 H013 H012 H009 Print the string representation of the created Deli Set objects. (3 marks) As mentioned in the introduction, ERP currently offers these 3 sets: EconSet, LowFatSet and Low CarbSet. Participants can select their preferred Delis to form a Deli Set, as long as the Deli selections fit the criteria of these 3 sets. Figure Q3 shows the specifications of the Deli Set class and its subclasses: EconSet, LowFatSet and LowCarbSet. EconSet MAX DELI: 2 MAX PRICE: 6 SET TYPE: "E" addDelijself, deli: Deli) DellSet (abstract) _name: str deliList: list _init__(self, name: str, deli: Deli) name(self): str price(self): float consumeBy(self): float totalFat(self): float totalCalories(self): float setType(self): str getDeliCodes(self): str addDeli(self, dell: Deli) (abstract) _str_(self): str LowFatSet MAX FAT PERCENT: 10 SET TYPE: "F* addDeli(self, deli: Deli) LowCarbSet MAX CALORIES: 500 SET TYPE: "C" addDeli(self, deli: Deli) Figure Q3 Write a Python class definition for the exception class ERPException - subclass of the Exception class. This class has no added attribute or method. When the application encounters ERP rules violation, your application will raise an exception from this class. (1 mark) (6) Implement the abstract class-DeliSet. The DeliSet class has: TWO instance variables: o name (str): represents the customer defined name for this meal set. _deliList (list): a list containing the participant's selection of Deli objects for this meal set. The constructor performs the following: Initialise_name with the given parameter name. Initialise the deliList as a list with one Deli object, which is the given parameter deli . Getter method for instance variable: _name. Use the property decorator. In addition, define getter methods for the following. Use the property decorator. price: returns the sum of all delis' price. . consumeBy: returns the lowest expiry hours of all delis. o totalFat returns the sum of all delis' fat content. o totalCalories: returns the sum of all delis' calories. The method setType returns the subclasses class variable _SET_TYPE. Hint use type(self). getDeliCodes is a method that returns all the deliCode of the Deli objects in _deliList, separated by commas. E.g.. "H001.CO04,H009" One abstract method: addDeli that has a Deli object as parameter and adds it into the_deliList, only if the following condition is met: There is no duplicated Deli within this DeliSet (ie, cannot have same deliCode). Otherwise, raise ERPException with appropriate message. The _str_method returns a string representation of a DeliSet object, including the name of the DeliSet, price, consumeBy, then follow by the name of the Deli objects. This is an example in the suggested format: Deliset: My Lunch Set Price: $6.00 with Smoked Duck Salad, Strawberry Pudding Consume in 1.5 hrs (9 marks) Write the Python class definitions for the 3 subclasses of Deli Set: EconSet, LowFat Set and Low Carb Set. The EconSet class has: THREE class variables: _MAX_DELI, _MAX_PRICE and _SET_TYPE. Implement the method addDeli by checking the following rules: With this addition, the number of delis should not be more than _MAX_DELI Otherwise, raise ERPException with appropriate message. With this addition, the price of the DeliSet should not be more than _MAX_PRICE. Otherwise, raise ERPException with appropriate message. If the above rules are met, invoke the parent's class addDeli to proceed with the addition (d) The LowFatSet class has: TWO class variables: _MAX_FAT_PERCENT and _SET_TYPE Implement the method addDeli by ensuring that this condition is met . With this addition, the total fat content for the DeliSet should not be more than _MAX_FAT PERCENT. Le, LowFatSet must not have total fat > 10% of total calories. Otherwise, raise ERPException with appropriate message. If the above condition is met, invoke the parent's class addDeli to proceed with the addition. The Low Carb Set class has: TWO class variables: _MAX_CALORIES and _SET_TYPE. Implement the method addDeli by enforcing the following rule: With this addition, the total calories for this DeliSet should not be more than _MAX_CALORIES. Otherwise, raise ERPException with appropriate message. . If the above rule is met, invoke the parent's class addDeli to proceed with the addition (12 marks) Write a main() function with exception handling for the following: Referring to Appendix B for the list of Delis, create the following THREE DeliSet using the information below: . Econ Set, with any name and H006, then add the following Delis in this order: C005 H010 LowFatSet, with any name and H003, then add the following Delis in this order: H002 C003 C001 Low Carb Set, with any name and C004, then add the following Delis in this order. C007 H013 H012 H009 Print the string representation of the created Deli Set objects. (3 marks)