class Student:definit__(self, first, last, gpa):self.first = first # first name#last nameself.last = lastself.gpagpa# grade point averagedef get_gpa(self):return self.gpadef get_last (self):return self.lastdef to_string(self):return self.first + T1class Course:definit__(self):self.rosterdef drop_student(self, student):# Type your code heredef add_student(self, student):self.roster.append(student)def count students(self):return len(self.roster)if __name__1+ self.last +_main__":# list of Student objectscourse Course()1(GPA:+ str(self.gpa) + ')'course.add_student (Student('Henry', 'Nguyen', 3.5))course.add_student(Student('Brenda', 'Stern', 2.0))course.add_student (Student('Lynda', 'Robinson', 3.2))course.add_student (Student('Sonya', 'King', 3.9))print (f'Course size: { course.count_students() } students')course.drop_student('Stern')print (f'Course size after drop: { course.count_students() } students') 14.24 LAB: Drop studentComplete the Course class by implementing the drop_student() instance method, which removes a student (by last name) from the courseroster. If the student is not found in the course roster, no student should be dropped.The file main.py contains:The main function for testing the program.• Class Course represents a course, which contains a list of Student objects as a course roster. (Type your code in here.)Class Student represents a classroom student, which has three attributes: first name, last name, and GPA. (Hint: get_last() returns thelast name field.)●●Note: For testing purposes, different student values will be used.Ex. For the following students:Henry Nguyen 3.5Brenda Stern 2.0Lynda Robison 3.2Sonya King 3.9the output for dropping Stern is:Course size: 4 students.Course size after drop: 3 students

Introduction In Python, a function is a named and reusable block of code that performs a specific…

class Student: definit__(self, first, last, gpa): self.first = first # first name self.last last #last name self.gpagpa #grade point average def get_gpa(self): return self.gpa def get_last (self): return self.last def to_string(self): 1 return self.first + ' ' + self.last + (GPA: class Course: definit__(self): self.roster = [] #list of Student objects def drop_student(self, student): # Type your code here def add_student(self, student): self.roster.append(student) def count students(self): return len(self.roster) if __name__ "__main__": course Course() 1 + str(self.gpa) + ')' course.add_student(Student('Henry', 'Nguyen', 3.5)) course.add_student (Student('Brenda', 'Stern', 2.0)) course.add_student (Student('Lynda', 'Robinson', 3.2)) course.add_student(Student('Sonya', 'King', 3.9)) print(f'Course size: { course.count_students() } students') course.drop_student('Stern') print (f'Course size after drop: { course.count_students() } students')

class Student: definit__(self, first, last, gpa): self.first = first # first name self.last last #last name self.gpagpa #grade point average def get_gpa(self): return self.gpa def get_last (self): return self.last def to_string(self): 1 return self.first + ' ' + self.last + (GPA: class Course: definit__(self): self.roster = [] #list of Student objects def drop_student(self, student): # Type your code here def add_student(self, student): self.roster.append(student) def count students(self): return len(self.roster) if name "main": course Course() 1 + str(self.gpa) + ')' course.add_student(Student('Henry', 'Nguyen', 3.5)) course.add_student (Student('Brenda', 'Stern', 2.0)) course.add_student (Student('Lynda', 'Robinson', 3.2)) course.add_student(Student('Sonya', 'King', 3.9)) print(f'Course size: { course.count_students() } students') course.drop_student('Stern') print (f'Course size after drop: { course.count_students() } students')

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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python class Student:def __init__(self, first, last, gpa):self.first = first # first nameself.last = last # last nameself.gpa = gpa # grade point average def get_gpa(self):return self.gpa def get_last(self):return self.last def to_string(self):return self.first + ' ' + self.last + ' (GPA: ' + str(self.gpa) + ')' class Course:def __init__(self):self.roster = [] # list of Student objects def drop_student(self, student):# Type your code here def add_student(self, student):self.roster.append(student) def count_students(self):return len(self.roster) if __name__ == "__main__":course = Course() course.add_student(Student('Henry', 'Nguyen', 3.5))course.add_student(Student('Brenda', 'Stern', 2.0))course.add_student(Student('Lynda', 'Robinson', 3.2))course.add_student(Student('Sonya', 'King', 3.9)) print('Course size:', course.count_students(),'students')course.drop_student('Stern')print('Course size after drop:', course.count_students(),'students')
The class implementation: The Account class) Design a class named Account that contains: A private int data field named id for the account (default 0). A private double data field named balance for the account (default 0). A private double data field named annuallnterestRate that stores the urrent interest rate (default 0). Assume all accounts have the same interest
Exercise 1-Account class • Design a class named Account that contains : • A private int data field named id for the account • A private double data field named balance for the account • A privet Date data field named dateCreated that stores the date when the account was created • A no-arg constructor that creates a default account • A constructor that creates an account with the specified id and initial balance • The getters (i.e., accessors) and setters (i.e., mutators) methods for id and balance • The getter method for dateCreated • A method named withdraw that withdraws a specified amount from the account • A method named deposit that deposits a specified amount to the account
Object initializers let you assign values to any accessible properties of an object at creation time without having to invoke a constructor Question 19 options: a) True b) False
C# Language Create a class named Account with an instance variable named account_number. Make this class a member of the Accounts namespace.
A(n) is a unique form of class member that enables an object to store and retrieve data.
Car Class Project The car classwill havethe following attributes: •year: an integer that holds the car's model year •model: a string that holds the make of the car •make: a string that holds the model of the car •speed: an integer that holds the car's current speed Your class should contain thefollowing: A docstring that briefly describes the class and lists the attributes. The docstring will serve as the documentation for your class. •A constructor (__init__ method) that takes the car's year model and make as optional arguments. The constructor will set the value of the speed attribute to 0.•An __str__ method that returns the car's year model and makein a string. •To test your class, create acar object and use the print function to verify that the constructor and __str__ methodsare working correctly. •An accessor method which returns the value stored in the speed instance variable. Call this method getSpeed(). •A modifier method called accelerate() which adds 5 to the speed variable…
Create classs Code it
class Book: book_belongs_to = 'Schulich School of Engineering' def _init_(self, pages = 0, title = 'Unknown', author = 'Unknown', isbn = self.pages = pages self.title = title e): self.author = author self.isbn = isbn book1 = Book(255, 'Black Beauty', 'Anna Sewell', 9780001840423) book2 = Book(208, 'The Chrysalids', 'John Wyndham', 9780140013085) Book.book_belongs_to = 'Emily Marasco' book3 = Book()
Question 31 class Person: def __init__(mysillyobject, name, age): = name mysillyobject.name mysillyobject.age = age def myfunc(abc): print("Hello my age is", abc.age) p1 = Person("John", 36) p1.age = 40 p1.myfunc() O 40 Hello my age is 40 36 Hello my age is 36
Challenge 3: Vehicle.java, Automobile.java, Tank.java, Truck.java, Car.java, and TestVehicle.java Implement the classes that are given in the class diagram. Also implement a TestVehicle class where you will create three objects and execute their toString() methods. >> Automobile assignment2 a licensePlate: String make: String Automobile() Automobile(int,double, String, String) getLicensePlate(): String setLicense Plate(String):void ●getMake(): String setMake(String):void .toString(): String >> Ⓒ Truck assignment2 a towCapacity: double Truck() Truck(int, double, String, String, double) getTowCapacity():double setTowCapacity (double):void toString(): String Sample output > Vehicle assignment2 □ year: int weight: double Vehicle() Vehicle(int, double) getYear(): int setYear(int):void getWeight():double setWeight(double):void .toString(): String > Car assignment2 a maxPassengers: int Car() Car(int,double, String, String,int) getMaxPassengers() int setMaxPassengers (int):void toString():…
CIST 1305 UNIT 10 DROP BOX ASSIGNMENT Create the class diagram and write the pseudocode for a class named Computer that holds the make, model, and amount of memory of a computer. Include methods to set the values for each data field, and include a method that displays all the values for each field.