Starting Out with Python (4th Edition)
4th Edition
ISBN: 9780134444321
Author: Tony Gaddis
Publisher: PEARSON
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Chapter 11, Problem 4TF
Only the _ _init_ _method can be overridden.
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What type must self be for the __str__ method?
class User:def __init__(self, first_name, last_name, user_id, last_login, password):self.first_name = first_nameself.last_name = last_nameself.user_id = user_idself.last_login = last_loginself.password = passworddef describe_user(self):print(f"Accessing user {self.user_id}:")print(f"{self.first_name} {self.last_name} last logged in on {self.last_login}")def greet_user(self):print(f"Welcome to the jungle {self.first_name} {self.last_name}, you gonna die")def new_login(self, month, day, year):if month < 1 or month > 12:print("That is not a valid month")returnif day < 1 or day > 31:print("That is not a valid day")returnif year < 0:print("That is not a valid year")returnmonths = ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"]month_name = months[month-1]self.last_login = f"{month_name} {day}, {year}"
Hard-Code:
# hard-coded callsjim =…
class User:def __init__(self, first_name, last_name, user_id, last_login, password):self.first_name = first_nameself.last_name = last_nameself.user_id = user_idself.last_login = last_loginself.password = passworddef describe_user(self):print(f"Accessing user {self.user_id}:")print(f"{self.first_name} {self.last_name} last logged in on {self.last_login}")def greet_user(self):print(f"Welcome to the jungle {self.first_name} {self.last_name}, you gonna die")
Hard-code
# hard-coded calls
jim = User(first_name='Jim',last_name='Bob',user_id=1000,last_login='June 12, 1998',password='password123')jim.describe_user()jim.greet_user()joe = User('Joe','Bob',1001,'July 4, 2001','babygirl')joe.greet_user()joe.describe_user()joe.new_login(2, 3, 2025)joe.describe_user()joe.new_login(15, 3, 2025)joe.new_login(2, 35, 2025)joe.new_login(2, 3, -55)
Chapter 11 Solutions
Starting Out with Python (4th Edition)
Ch. 11.1 - In this section, we discussed superclasses and...Ch. 11.1 - Prob. 2CPCh. 11.1 - What does a subclass inherit from its superclass?Ch. 11.1 - Look at the following code, which is the first...Ch. 11.2 - Look at the following class definitions: class...Ch. 11 - In an inheritance relationship, the ___________ is...Ch. 11 - In an inheritance relationship, the _________ is...Ch. 11 - Suppose a program uses two classes: Airplane and...Ch. 11 - This characteristic of object-oriented programming...Ch. 11 - Prob. 5MC
Ch. 11 - Polymorphism allows you to write methods in a...Ch. 11 - It is not possible to call a superclasss _ _init_...Ch. 11 - A subclass can have a method with the same name as...Ch. 11 - Only the _ _init_ _method can be overridden.Ch. 11 - You cannot use the isinstance function to...Ch. 11 - What does a subclass inherit from its superclass?Ch. 11 - Look at the following class definition. What is...Ch. 11 - Prob. 3SACh. 11 - Write the first line of the definition for a...Ch. 11 - Look at the following class definitions: class...Ch. 11 - Look at the following class definition: class...Ch. 11 - Employee and ProductionWorker Classes Write an...Ch. 11 - ShiftSupervisor Class In a particular factory, a...Ch. 11 - Person and Customer Classes The Person and...
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