Question

PYTHON PROGRAMMING

Instructions: You are responsible for writing a program that allows a user to do one of five things at a time:

1. Add students to database.

• There should be no duplicate students. If student already exists, do not add the data again; print a message informing student already exists in database.

• Enter name, age, and address.

2. Search for students in the database by name.

• User enters student name to search

• Show student name, followed by age, address, and all grades tabbed over (next line).

3. Enter grade.

• User enters an assignment (assume that the assignment already exists)

• User enters a student name (assume that student already exists in database)

• User enters a grade (It’s up to you to have grades as string or integer or float)

• The student’s grade is assigned to that assignment.

4. Add assignment.

• User enters the name of the assignment to be added

• Once an assignment is added, it exists for all students.

• The default grade is a ‘-’ character.

5. Delete assignment.

• User enters an assignment to be deleted.

• The assignment is deleted for all students.

6. Quit.

• Quits the program.

Restrictions:

1. You must use a list or dictionary or both of those.

2. You must use an infinite loop.

3. You must use a break statement.

Answer 1

""" Adding student to the dictionary """


def add_student(details, student):
    if student not in details:
        details[student] = {}
    else:
        print("Student already exists in database")
    return details


""" Adding students detail to the dictionary"""


def add_details(name, age, address, details, student):
    details[student]['name'] = name
    details[student]['age'] = age
    details[student]['address'] = address


""" Searching student from the dictionary"""


def search_student(details, name):
    for (k, v) in details.items():
        if details[k]['name'] == name:
            print(details[k])
            break


""" Adding grade to the student """


def add_grade(details, student, assignment, grade):
    details[student][assignment][grade] = grade


"""Adding new assignment to the student"""


def add_assignment(details, assignment):
    for k, v in details.items():
        details[k][assignment] = {'grade': '-'}
    print(details)

"""Deleting the requested assignment """


def delete_assignment(details,name, assignment):
    if details[name][assignment]:
        del details[name][assignment]


def main():
    details = {}  # dictionary for storing the student details

    while True:
        student = input("Enter student")
        add_student(details, student)

        name = input("Enter student name")
        age = int(input("Enter age"))
        address = input("Enter address")

        add_details(name, age, address, details, student)

        search_name = input("Enter name you want to search for")
        search_student(details, search_name)

        assignment = input("Enter assignment")
        add_assignment(details, assignment)

        grade = input("Enter grade")
        add_grade(details, student, assignment, grade)

        remove_assignment = input("Enter assignment")
        delete_assignment(details, name,remove_assignment)

        n = int(input("If you want to quit please enter 1 else input some other number"))

        if n == 1:
            break


if __name__ == '__main__':
    main()