School_Database_project

print("Students's Database")

main_dic = {}


print('''Enter the corresponding number of the task you want to perform:
1. Adding records
2. Search a record
3. Delete a record
4. Update a record:''')

ops = int(input())
if ops == 1:
    no = int(input("Enter the number of records you want to enter:"))
    no += 1

    for i in range(1,no):

        name = input("Enter the name:")
        clas = input("Enter the class:")
        Roll_no = int(input("Enter the Roll no:"))
        Fee_status = input("Enter the Fee status(Cleared/Pending):")

        amt_fees = 0

        if Fee_status == 'Pending' or Fee_status == 'pending':
            amt_fees = int(input("Amount of fees pending:"))


        new_dic = {}
        new_dic.setdefault(Roll_no,[name,clas,Fee_status,amt_fees])
        print("Record updated!")
        main_dic.update(new_dic)
        print(main_dic)

    print("Any new operation you want to proceed with? (Yes/No)")
    rep = input()

    if rep == 'Yes':
        print('''Enter the corresponding number of the task you want to perform:
1. Adding records
2. Search a record
3. Delete a record
4. Update a record:''')
        arg = int(input())
        ops = arg

    else:
        print("Tasks accomplished!")

if ops == 2:

    search_roll = int(input("Enter the Roll no. of the student:"))

    if search_roll in main_dic:
        print("Here's the info:", main_dic.get(search_roll))

    else:
        print("Invalid argument!")

    print("Any new operation you want to proceed with? (Yes/No)")
    rep = input()

    if rep == 'Yes':
        print('''Enter the corresponding number of the task you want to perform:
1. Adding records
2. Search a record
3. Delete a record
4. Update a record:''')

        arg = int(input())
        ops = arg

    else:
        print("Tasks accomplished!")


if ops == 3:
    print("Available database:", main_dic)

    del_rec = int(input("Enter the number of records to be deleted:"))

    for i in range(del_rec):
        del_key = int(input("Enter the key of the record you want to delete:"))
        main_dic.pop(del_key)
        print("Record deleted!")
        print("The updated database:", main_dic)

    print("Any new operation you want to proceed with? (Yes/No)")
    rep = input()

    if rep == 'Yes':
        print('''Enter the corresponding number of the task you want to perform:
1. Adding records
2. Search a record
3. Delete a record
4. Update a record:''')

        arg = int(input())
        ops = arg

    else:
        print("Tasks accomplished!")

if ops == 4:

    print("Available database is:", main_dic)
    print('''Enter the number of the corresponding task to be performed:
    1. Append a record
    2. Change the data of a particular field of existing record''')

    det = int(input())

    if det == 1:
        print("Format to enter data: [Roll_No, Name, Class, Fee Status, Amount of Fees pending]")
        app = eval(input("Enter the data of the student (in list):"))
        a,b,c,d,e = app
        new_rec = {a:[b,c,d,e]}
        main_dic.update(new_rec)
        print("Database updated!")
        print(main_dic)

        print("Any new operation you want to proceed with? (Yes/No)")
        rep = input()
        if rep == 'Yes':
            print('''Enter the corresponding number of the task you want to perform:
1. Adding records
2. Search a record
3. Delete a record
4. Update a record:''')

            arg = int(input())
            ops = arg

        else:
            print("Tasks accomplished!")

if ops == 4:

    print("Available database is:", main_dic)
    print('''Enter the number of the corresponding task to be performed:
    1. Append a record
    2. Change the data of a particular field of existing record''')

    det = int(input())

    if det == 2:
        up_rec = int(input("Enter the key of the record to be updated:"))
        up_field = int(input('''Enter the corresponding number for the field to be updated:
                            0. Name
                            1. Class
                            2. Fee Status
                            3. Amount of fees pending:'''))
        if up_field == 2:

            up_dat = input("Enter the new status:")
            up_amt = int(input("Enter the amount of pending fee:"))
            main_dic[up_rec][up_field] = up_dat
            main_dic[up_rec][3] = up_amt
            print("Record updated!")
            print(main_dic)


        else:

            up_dat = input("Enter the new data:")
            main_dic[up_rec][up_field] = up_dat
            print("Record updated!")
            print(main_dic)

        print("Any new operation you want to proceed with? (Yes/No)")
        rep = input()

        if rep == 'Yes':
            print('''Enter the corresponding number of the task you want to perform:
1. Adding records
2. Search a record
3. Delete a record
4. Update a record:''')

            arg = int(input())
            ops = arg

        else:
            print("Tasks accomplished!")


#[10, 'Ram', 'XI B', 'Cleared', 0]
#[15, 'Rohan', 'XII B', 'Pending', 700]