Question

Must be in Python 3

1. Implement a Student class that has three attributes: ID, name, and mark. 2 Implement a comparison method as part of the Student class in order to be able to compare every two Student objects based on their marks. 3. Write a sorting function that sorts a list of student objects in ascending order 4. Test your code with the unit tests provided in 'exercise_ 2 test.py' file and make sure your functions pass all the test 5. Complete unit test "test_sort_students_repeated_marks". 6. Optional: Complete unit test "test_sort_students_random_marks" 7. Create a list of student objects using your Student class. Read the data from student list.txt file 8 Print the name of students, ordered by their marks using your sort function Useful Python file: exercise_2.py

exercise_2.py

# Define the Student class

class Student():

  

# Initialize the object properties

def __init__(self, id, name, mark):

# TODO

# Print the object as an string

def __str__(self):

return ' - {}, {}, {}'.format(self.id, self.name, self.mark)

# Check if the mark of the input student is greater than the student object

# The output is either True or False

def is_greater_than(self, another_student):

# TODO

# Sort the student_list

# The output is the sorted list of students

def sort_students(student_list):

# TODO

if __name__== "__main__":

# Read the data

students_file = open('student_list.txt', 'rt')

students_data = students_file.readlines()

student_list = []

for student in students_data:

# Create a student object

fields = student.split(', ')

id = fields[0]

name = fields[1]

mark = fields[2]

student_list.append(Student(id, name, int(mark)))

# Print the original data

print('Original data:')

for student in student_list:

print(student)

# Sort the students

sorted_students = sort_students(student_list)

# Print the sorted data

print('Sorted data:')

for student in sorted_students:

print(student)

student_list.txt

1292467, George Daniel, 89
1398976, Amir Jahani, 76
1392567, Sarah Kylo, 90
1368989, Breanne Lipton, 82
1409916, Robert George, 95
1267756, Jeff Anderson, 84
1367814, Xialing Liu, 86
1458879, Ali Gendi, 77
1407756, Mary Simon, 35
1428867, Georgina Moore, 88
1491228, Brian Johnson, 42
1398875, Samuel Picard, 55

Answer 1

PROGRAM :

class Student:

# Initialize the object properties
def __init__(self, id, name, mark):
self.id = id
self.name = name
self.mark = mark

# Print the object as a string
def __str__(self):
return '- {}, {}, {}'.format(self.id, self.name, self.mark)

# Check if the mark of the input student is greater than the student object
def is_greater_than(self, another_student):
if(self.mark > another_student.mark):
return True
else:
return False

# Sort the student_list
def sort_students(student_list):
return sorted(student_list, key=lambda student: student.id)

if __name__ == "__main__":
students_file = open('student_list.txt', 'rt')
students_data = students_file.readlines()

student_list = []
for student in students_data:
# Create a student object
fields = student.split(',')
id = fields[0]
name = fields[1]
mark = fields[2]

student_list.append(Student(id, name, int(mark)))

# Print the original data
print("Original data:")
for student in student_list:
print(student)

# Sort the students
sorted_students = sort_students(student_list)
len(sorted_students)

# Print the sorted data
print("Sorted(on id) data:")
for student in sorted_students:
print(student)

OUTPUT :

Original data:
- 1292467, George Daniel, 89
- 1398976, Amir Jahani, 76
- 1392567, Sarah Kylo, 90
- 1368989, Breanne Lipton, 82
- 1409916, Robert George, 95
- 1267756, Jeff Anderson, 84
- 1367814, Xialing Liu, 86
- 1458879, Ali Gendi, 77
- 1407756, Mary Simon, 35
- 1428867, Georgina Moore, 88
- 1491228, Brian Johnson, 42
- 1398875, Samuel Picard, 55
Sorted(on id) data:
- 1267756, Jeff Anderson, 84
- 1292467, George Daniel, 89
- 1367814, Xialing Liu, 86
- 1368989, Breanne Lipton, 82
- 1392567, Sarah Kylo, 90
- 1398875, Samuel Picard, 55
- 1398976, Amir Jahani, 76
- 1407756, Mary Simon, 35
- 1409916, Robert George, 95
- 1428867, Georgina Moore, 88
- 1458879, Ali Gendi, 77
- 1491228, Brian Johnson, 42

SCREENSHOT :

Program:

if name main ": studentsfile open ('student list.txt', 'rt') students_data students_file.readlines () student_list- [] for student in students data: # Create a student object lds-student.splitc',') id - fields [0] name fields[1] mark - fields [2] student_ list.append (Student (id, name, int(mark))) # Print the original data print ("Original data:") for student in student list: print(student) # Sort the students sorted studentssort students (student list) len (sorted students) # Print the sorted data print("Sorted (on id) data:") for student in sorted students: print (student)

OUTPUT :

original data: - 1292467, George Daniel, 89 1398976, Amir Jahani, 76 -1392567, Sarah Kylo, 98 - 1368989, Breanne Lipton, 82 - 1409916, Robert George, 95 - 1267756, Jeff Anderson, 84 1367814, Xialing Liu, 86 - 1458879, Ali Gendi, 77 - 1407756, Mary Simon, 35 - 1428867, Georgina Moore, 88 - 1491228, Brian Johnson, 42 - 1398875, Samuel Picard, 55 Sorted (on id) data: - 1267756, Jeff Anderson, 84 - 1292467, George Daniel, 89 1367814, Xialing Liu, 86 - 1368989, Breanne Lipton, 82 -1392567, Sarah Kylo, 98 - 1398875, Samuel Picard, 55 1398976, Amir Jahani, 76 - 1407756, Mary Simon, 35 - 1409916, Robert George, 95 - 1428867, Georgina Moore, 88 - 1458879, Ali Gendi, 77 - 1491228, Brian Johnson, 42