Refer to the following code and answer the questions on the right: 1 class Product: 2 store_name = "ProtoTop" 1. Which of the following can be used to change the stock attribute of hopia? 3 O hopia.add_supplies(20) O hopia.sell(20) O Product.add_supplies(hopia, 20) O Product.selI(hopia, 20) O hopia.stock += 20 4 def _init_(self, name, category, price, stock, weight_in_grams): self.name = name self.description = self.category = category 8 self.price = price self.stock = stock 10 self.weight_in_grams = weight_in_grams 2. What will be the output by the print function below: 11 def change_name(self, new_name): self.name = new_name hopia.change_description(f"{hopia.name} is a {hopia.category} product that weighs {hopia.weight_in_grams} grams print(hopia.description) 12 13 14 15 def change_description(self, new_description): Answer: 16 self.description = new_description 17 18 def change_category(self, new_category): 19 self.category = new_category After the last line, let us add the following assignment statement hopia.store_name = "FreshTop" 3. 20 21 def change_weight(self, new_weight_in_grams): print(hopia.store_name) 22 self.weight_in_grams = new_weight_in_grams 23 We have directly accessed and changed the value of the store_name attribute of hopia. This means that what we are printing is now an instance attribute and not a class attribute. def add_supplies(self, stocks_added): self.stock += stocks_added 24 25 O True 26 O False def sell(self, stocks_sold): if self.stock > stocks_sold: self.stock -- stocks_sold 27 28 29 30 else: 31 print(f"Not enough stocks of {self.name} for selling.") 32 33 hopia = Product("Hopia", "food", 4, 100, 20)
Refer to the following code and answer the questions on the right: 1 class Product: 2 store_name = "ProtoTop" 1. Which of the following can be used to change the stock attribute of hopia? 3 O hopia.add_supplies(20) O hopia.sell(20) O Product.add_supplies(hopia, 20) O Product.selI(hopia, 20) O hopia.stock += 20 4 def _init_(self, name, category, price, stock, weight_in_grams): self.name = name self.description = self.category = category 8 self.price = price self.stock = stock 10 self.weight_in_grams = weight_in_grams 2. What will be the output by the print function below: 11 def change_name(self, new_name): self.name = new_name hopia.change_description(f"{hopia.name} is a {hopia.category} product that weighs {hopia.weight_in_grams} grams print(hopia.description) 12 13 14 15 def change_description(self, new_description): Answer: 16 self.description = new_description 17 18 def change_category(self, new_category): 19 self.category = new_category After the last line, let us add the following assignment statement hopia.store_name = "FreshTop" 3. 20 21 def change_weight(self, new_weight_in_grams): print(hopia.store_name) 22 self.weight_in_grams = new_weight_in_grams 23 We have directly accessed and changed the value of the store_name attribute of hopia. This means that what we are printing is now an instance attribute and not a class attribute. def add_supplies(self, stocks_added): self.stock += stocks_added 24 25 O True 26 O False def sell(self, stocks_sold): if self.stock > stocks_sold: self.stock -- stocks_sold 27 28 29 30 else: 31 print(f"Not enough stocks of {self.name} for selling.") 32 33 hopia = Product("Hopia", "food", 4, 100, 20)
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Transcribed Image Text:Refer to the following code and answer the questions on the right:
1 class Product:
2
store_name = "ProtoTop"
1. Which of the following can be used to change the stock attribute of hopia?
3
O hopia.add_supplies(20)
O hopia.sell(20)
O Product.add_supplies(hopia, 20)
O Product.selI(hopia, 20)
O hopia.stock += 20
4
def _init_(self, name, category, price, stock, weight_in_grams):
self.name = name
self.description =
self.category = category
8
self.price = price
self.stock = stock
10
self.weight_in_grams = weight_in_grams
2.
What will be the output by the print function below:
11
def change_name(self, new_name):
self.name = new_name
hopia.change_description(f"{hopia.name} is a {hopia.category} product that weighs {hopia.weight_in_grams} grams
print(hopia.description)
12
13
14
15
def change_description(self, new_description):
Answer:
16
self.description = new_description
17
18
def change_category(self, new_category):
19
self.category = new_category
After the last line, let us add the following assignment statement
hopia.store_name = "FreshTop"
3.
20
21
def change_weight(self, new_weight_in_grams):
print(hopia.store_name)
22
self.weight_in_grams = new_weight_in_grams
23
We have directly accessed and changed the value of the store_name attribute of hopia.
This means that what we are printing is now an instance attribute and not a class attribute.
def add_supplies(self, stocks_added):
self.stock += stocks_added
24
25
O True
26
O False
def sell(self, stocks_sold):
if self.stock > stocks_sold:
self.stock -- stocks_sold
27
28
29
30
else:
31
print(f"Not enough stocks of {self.name} for selling.")
32
33 hopia = Product("Hopia", "food", 4, 100, 20)
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