1 class Course: 2 B 4 5 7 B B 6 7 8 9 definit__(self): self.roster = [] 2 1 2 B 4 class Student: 5 def add student (self, student): self.roster.append(student) 4 5 6 def drop_student (self, last_name): for i, student in enumerate(self.roster): if student.get_last() == last_name: del self.roster[i] break definit__(self, first, last, gpa): self.first = first self.last last self.gpagpa 2 1 2 3 def main(): def get_last (self): return self.last course Course() henry Student ("Henry", "Nguyen", 3.5) brenda = Student ("Brenda", "Stern", 2.0) lynda Student ("Lynda", "Robison", 3.2) sonya = Student ("Sonya", "King", 3.9) = 8 9 course.add_student (henry) 2 course.add_student (brenda) 1 course.add_student (lynda) 2 course.add_student (sonya) B print("Course size:", len(course.roster), "students") 4 course.drop_student("Stern") 5 print("Course size after drop: ", len(course.roster), "students") 6 7 if __name__ 8 main() 11 == __main__":
1 class Course: 2 B 4 5 7 B B 6 7 8 9 definit__(self): self.roster = [] 2 1 2 B 4 class Student: 5 def add student (self, student): self.roster.append(student) 4 5 6 def drop_student (self, last_name): for i, student in enumerate(self.roster): if student.get_last() == last_name: del self.roster[i] break definit__(self, first, last, gpa): self.first = first self.last last self.gpagpa 2 1 2 3 def main(): def get_last (self): return self.last course Course() henry Student ("Henry", "Nguyen", 3.5) brenda = Student ("Brenda", "Stern", 2.0) lynda Student ("Lynda", "Robison", 3.2) sonya = Student ("Sonya", "King", 3.9) = 8 9 course.add_student (henry) 2 course.add_student (brenda) 1 course.add_student (lynda) 2 course.add_student (sonya) B print("Course size:", len(course.roster), "students") 4 course.drop_student("Stern") 5 print("Course size after drop: ", len(course.roster), "students") 6 7 if __name__ 8 main() 11 == __main__":
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
Related questions
Question
Code did not work
Transcribed Image Text:1:Compare output
Your output
2:Unit test ^
Tests course.drop_student('Sally') drops Sally from the course
AttributeError: 'Course' object has no attribute 'count_students'
3:Unit test ^
Course size: 4 students
Course size after drop: 3 students
4:Unit test
Tests course.drop_student('Sally') and course.drop_student('Tyson') drops Sally and Tyson from the course
AttributeError: 'Course' object has no attribute 'count_students'
Tests course.drop_student('Fish') drops no students from the course
AttributeError: 'Course' object has no attribute 'count_students'
3/3
0/2
0/2
0/3
![1 class Course:
2
definit__(self):
self.roster
3
4
5
6
7
8
9
0
1
2
3
4 class Student:
5
6
7
8
9
0
1
2
3 def main():
4
5
6
7
Student ("Brenda", "Stern", 2.0)
lynda Student ("Lynda", "Robison", 3.2)
Student ("Sonya", "King", 3.9)
8
sonya
9
0
course.add_student (henry)
course.add_student(brenda)
course.add_student (lynda)
1
2 course.add_student (sonya)
3 print("Course size:", len(course.roster), "students")
4
5
6
7 if __name__ ==
8
main()
def add_student(self, student):
self.roster.append(student)
def drop_student (self, last_name):
for i, student in enumerate(self.roster):
if student.get_last()
del self.roster[i]
break
definit__(self, first, last, gpa):
self.first = first
self.last = last
self.gpagpa
def get_last (self):
return self.last
=
course = Course()
henry Student ("Henry", "Nguyen", 3.5)
brenda
last_name:
11
course.drop_student("Stern")
print("Course size after drop: ", len(course.roster), "students")
_main__":](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fa332979b-3709-48a2-942a-205e2ae2d053%2F566a5fa2-3cb0-4daf-b17a-b3549bfb75d3%2Ft2oo03_processed.png&w=3840&q=75)
Transcribed Image Text:1 class Course:
2
definit__(self):
self.roster
3
4
5
6
7
8
9
0
1
2
3
4 class Student:
5
6
7
8
9
0
1
2
3 def main():
4
5
6
7
Student ("Brenda", "Stern", 2.0)
lynda Student ("Lynda", "Robison", 3.2)
Student ("Sonya", "King", 3.9)
8
sonya
9
0
course.add_student (henry)
course.add_student(brenda)
course.add_student (lynda)
1
2 course.add_student (sonya)
3 print("Course size:", len(course.roster), "students")
4
5
6
7 if __name__ ==
8
main()
def add_student(self, student):
self.roster.append(student)
def drop_student (self, last_name):
for i, student in enumerate(self.roster):
if student.get_last()
del self.roster[i]
break
definit__(self, first, last, gpa):
self.first = first
self.last = last
self.gpagpa
def get_last (self):
return self.last
=
course = Course()
henry Student ("Henry", "Nguyen", 3.5)
brenda
last_name:
11
course.drop_student("Stern")
print("Course size after drop: ", len(course.roster), "students")
_main__":
Expert Solution
Introduction:
-
Class Student defines a Student object, which has the properties first, last, and gpa.
- Class Course defines a Course object, which contains a list of Student objects (roster).
The drop_student() method loops through the roster and deletes the student with the matching last name.
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