Question

python programming

Student + last_name: str +first_name: str +phone str + year: int -init-(self: Student, i : int, last: str, first: str, ph : str. yr : int) -str (self. Student) repr_(self: Student) +update_year(self: Student) Online Student email: str + study_group: strl] 一init-(self: OnlineStudent, i : int, lapt : str, first: str. ph : str. yr : int, em : str) str_(self: OnlineStudent) repr__(self: OnlineStudent) It_(self. OnlineStudent, other: OnlineStudent) +add group member(self: OnlineStudent, member id: int)

• Goal: Implement and test the OnlineStudent class as shown in the Student/OnlineStudent UML Diagram.
• Input Files: students.txt  study-groups.txt
• The study_group instance variable is a list that contains the username values of the other members in the student's study group.
• Details:
  1. Implement the OnlineStudent class in the module onlinestudent.py as specified by the Student/OnlineStudent UML Diagram. OnlineStudent is the derived class of the base classStudent.
  2. The __lt__ method for an OnlineStudent object should return true if

     self.username < other.username
     

  3. The add_group_member method adds the username of a new study group member to the study_group instance member list.
  4. Write a traditional test class test1.py (different than your test1 script in Project 4a) that tests the additional instance members of the OnlineStudent class that are not in the Student class:

     __init__   __str__   __repr__   __lt__  
     
     email  study_group  add_group_member
     

     __init__, __str__, and __repr__ are tested again in the OnlineStudent class because they are overridden methods.
• Convert your test1.py script to a unit test script test2.py.

students.txt

mcarter,Carter,Marilyn,312/473-4837,1,[email protected]
ggraber,Graber,Gary,312/837-2837,3,[email protected]
ccarpent,Carpenter,Carrie,312/377-2873,2,[email protected]
ccheng,Cheng,Sam,312/272-4473,1,[email protected]
obooker,Booker,Olivia,312/928-3980,4,[email protected]
rscanchez,Sanchez,Ricardo,312/838-9928,2,[email protected]
cdharan,Dharan,Connor,312/263-3922,2,[email protected]
yboulet,Boulet,Yvette,312/235-3728,3,[email protected]
rbolger,Bolger,Raymond,312/663-3827,4,[email protected]
sstrickl,Strickland,Sheryl,312/878-9800,1,[email protected]

study-groups.txt

ccarpent,yboulet,obooker
yboulet,ccarpent,obooker
obooker,ccarpent,yboulet
ccheng,cdharan,rbolger,ggraber
cdharan,rbolger,ggraber,ccheng
rbolger,ggraber,ccheng,cdharan
ggraber,ccheng,cdharan,rbolger
mcarter,sstrickl
sstrickl,mcarter

Answer 1

CODE:(TESTING STUDENT CLASS)

class Student:
    def __init__(self,i,last,first,ph,yr):
        self.username = i
        self.last_name = last
        self.first_name = first
        self.phone = ph
        self.year = yr
    def __str__(self):
        return "Username: "+self.username+"\nName: "+self.first_name+" "+self.last_name+"\nPhone: "+self.phone+"\nYear: "+str(self.year)
    def __repr__(self):
        return f'Student("{self.username}", "{self.last_name}","{self.first_name}","{self.phone}",{self.year})'
    def update_year(self):
        self.year = int(input("Enter new value for year"))
        
def main():
    l = []
    fh = open('students.txt','r')
    for line in fh.readlines():
        i,last,first,ph,yr,mail = line.split(',')
        l.append(Student(i,last,first,ph,int(yr)))
    fh.close()
    for i in l:
        print(i)
main()
        
        

OUTPUT:

Username: mcarter Name: Marilyn Carter Phone: 312/473-4837 Year: 1 Username: ggraber Name: Gary Graber Phone: 312/837-2837 Year: 3 Username: ccarpent Name: Carrie Carpenter Phone: 312/377-2873 Year: 2 Username: ccheng Name: Sam Cheng Phone: 312/272-4473 Year: 1 Username: obooker Name: Olivia Booker Phone: 312/928-3980 Year: 4 Username: rscanchez Name: Ricardo Sanchez Phone: 312/838-9928 Year: 2 Username: cdharan Name: Connor Dharan Phone: 312/263-3922 Year: 2 Username: yboulet Name: Yvette Boulet Phone: 312/235-3728 Year: 3 Username: rbolger Name: Raymond Bolger Phone: 312/663-3827 Year: 4 Username: sstrickl Name: Sheryl Strickland Phone: 312/878-9800 Year: 1

CODE:(TESTING ONLINESTUDENT CLASS)

class Student:
def __init__(self,i,last,first,ph,yr):
self.username = i
self.last_name = last
self.first_name = first
self.phone = ph
self.year = yr
def __str__(self):
return "Username: "+self.username+"\nName: "+self.first_name+" "+self.last_name+"\nPhone: "+self.phone+"\nYear: "+str(self.year)
def __repr__(self):
return f'Student("{self.username}", "{self.last_name}","{self.first_name}","{self.phone}",{self.year})'
def update_year(self):
self.year = int(input("Enter new value for year"))
  
class OnlineStudent(Student):
def __init__(self,i,last,first,ph,yr,em):
super().__init__(i,last,first,ph,yr)
self.email = em
self.study_group = []
def __str__(self):
return super().__str__()+"\nEmail: "+self.email+"\nStudy group: "+self.study_group
def __lt__(self,other):
if self.username<other.username:
return True
else:
return False
def add_group_member(self,member_id):
self.study_group.append(member_id)