Odoo task completion with python

Task to Do

Students Mark Sheet:

Create New Object For Entering Student Marks
In student mark forms add fields student name, class, section and roll number (on selection of student name auto populate class,section and roll number)
In lines add option to select subject(5 subjects) and total marks(Out of hundred)
At bottom of the form, sum all subject marks and show over all total of Marks
Create new PDF report with details of students and marks

Student Master:

Create New object for student master and add all necessary field details of students like name, Roll Number, Class, Section, contact number, father & mother name, address blood group, family details etc,
Write a logic for automatic generation of student roll number

Roll Number Logic:

For Class : Assign some code (Class should be new object and code will be a new field)
For Section : Assign some code (Section should be new object and code will be a new field)
Followed by four digit auto generated number

For example : If student belong to Class 1 and Section C

Class 1 code, assign as 01
Section code, assign as C
Followed by four digit auto code 0001

The roll number will be like 01C00001, 01C0002, 01C0003 and goes for different students.The attached file contains the example.

Please do the task and submit it as early as possible.You have to send screenshots and codes in a zip file/upload in google drive