Week0 wrap up assignment

class Student:
    def __init__(self, name, major, andrew_id, gpa):
        self.name = name
        self.major = major
        self.andrew_id = andrew_id
        self.gpa = gpa
    def update_info(self, major, gpa):
        self.major = major
        self.gpa = gpa
    def __repr__(self):
        return self.name + " " + self.major + " " +   self.andrew_id + " " + str(self.gpa)
    def get_name(self):
        return self.name
    def get_major(self):
        return self.major
    def get_andrew_id(self):
        return self.andrew_id
    def get_gpa(self):
        return self.gpa
class course:
    def __init__(self, code, name, major, credits):
        self.code = code
        self.name = name
        self.major = major
        self.credits = credits
    def update_info(self, major, credits, code):
        self.major = major
        self.credits = credits
        self.code = code
    def __repr__(self):
        return str(self.code) + " " + self.name + " " +   self.major + " " + str(self.credits)
    def get_name(self):
        return self.name
    def get_major(self):
        return self.major
    def get_code(self):
        return self.code
    def get_credits(self):
        return self.credits

#FILE OPENING
f1 = open("students_names.txt", "r+")
f2 = open("courses_names.txt", "r+")

#STUDENT RELATED LIST
Students_list = []
Student_names = []
Student_andrew_id = []
Student_gpa = []
Student_major = []

#COURSE RELATED LIST
Course_list = []
Course_names = []
Course_code_list = []
Course_major = []
Course_credits = []


for line in f1:
    line_splitted = line.split("-")
    temp_students = Student( line_splitted [0], line_splitted[1], line_splitted[2], float(line_splitted[3].rstrip('\n')))
    Students_list.append(temp_students)
    
for a in Students_list:
    Student_names.append(a.get_name())
    Student_andrew_id.append(a.get_andrew_id())
    Student_gpa.append(a.get_gpa())
    Student_major.append(a.get_major())

for line in f2:
    line_splitted = line.split(";")
    temp_courses = course( line_splitted [0], line_splitted[1], line_splitted[2], float(line_splitted[3].rstrip('\n')))
    Course_list.append(temp_courses)


for a in Course_list:
    Course_names.append(a.get_name())
    Course_code_list.append(a.get_code())
    Course_credits.append(a.get_credits())
    Course_major.append(a.get_major())
    
z = len(Student_names)
x = len(Course_list)
version = "v1.0"

#ONLY FOR THE PRESENTATION
print(Student_names)
print(Course_names) 
command = input("What do you want?")
while command != "exit":
    if command == "show full list":
        print(Students_list)
    elif command == "show student names":
        print(Student_names)
    elif command == "check gpa":
        n = 0
        a1 = input("Which students GPA do you want to check")
        while True:
            if Student_names[int(n)] == str(a1):
                break
            else:
                n += 1
        GPA = float(Student_gpa[int(n)])
        if GPA == 0.0:
            print("F")
        elif GPA > 0.0 and GPA <= 1.0:
            print("D")
        elif GPA>1.0 and GPA<=2.0:
            print("C")
        elif GPA >2.0 and GPA <= 3.0:
            print("B")
        elif GPA >3.0 and GPA <=4.0:
            print("A")
    elif command == "edit":
        n = 0
        a1 = input("Which students info do you want to change")
        a2 = input("What would be his/her major?")
        a3 = input("What would be his/her gpa?")
        while True:
            if Student_names[int(n)] == str(a1):
                break
            else:
                n += 1
        Students_list[int(n)].update_info(str(a2), float(a3))
        Student_major[int(n)] = str(a2)
        Student_gpa[int(n)] = float(a3)
    elif command == "represent":
        a1 = input("Which student info do you want to see?")
        n = 0
        while True:
            if Student_names[int(n)] == str(a1):
                break
            else:
                n += 1
        print(Students_list[int(n)].__repr__())
#COMMANDS FOR COURSE FILE
    elif command == "show courses":
        print(Course_list)
    elif command == "show course names":
        print(Course_names)
    elif command == "edit course":
        n = 0
        a1 = input("Which course info do you want to change")
        a2 = input("What would be its 'major' requirement?")
        a3 = input("What would be its credit hours?")
        a4 = input("What would be its code")
        while True:
            if Course_names[int(n)] == str(a1):
                break
            else:
                n += 1
        Course_list[int(n)].update_info(str(a2), float(a3), str(a4))
        Course_major[int(n)] = str(a2)
        Course_credits[int(n)] = float(a3)
        Course_code_list[int(n)] = str(a4)
    elif command == "specific course":
        a1 = input("Which specific course info do you want to see?")
        n = 0
        while True:
            if Course_names[int(n)] == str(a1):
                break
            else:
                n += 1
        print(Course_list[int(n)].__repr__())
    elif command == "summary":
        a = open("report.txt", "w")
        a.write("Number of students: {}\n".format(z))
        a.write("Number of courses: {}\n".format(x))
        a.write("Exported using version: {}\n".format(version))
        a.close()
    elif command == "all s":
        print(Student_major)
        print(Student_andrew_id)
        print(Student_gpa)
        print(Student_names)
    command = input("OK. What else?")

print("Thank you for using this application")

f1.close()


with open('students_names.txt', "w") as updatedFile:
    n = 0
    while True:
        if n >= z:
            break
        else:
            w1 = Student_names[int(n)]
            w2 = Student_major[int(n)]
            w3 = Student_andrew_id[int(n)]
            w4 = Student_gpa[int(n)]
            updatedFile.write("{} {} {} {}\n".format(str(w1), str(w2), str(w3), w4))
            n += 1