Student management system in Python

Problem Statement: Write a program to build a simple Student Management System using Python which can perform the following operations:

1. Accept
2. Display
3. Search
4. Delete
5. Update

Prerequisite: Classes and objects in python 

Approach: Below is the approach to doing the above operations:

1. Accept – This method takes details from the user like name, roll number, and marks for two different subjects.

# Method to enter new student details
def accept(self, Name, Rollno, marks1, marks2 ):
    # Creates a new class constructor
    # and pass the details
    ob = Student(Name, Rollno, marks1, marks2 )

    # list containing objects of student class
    ls.append(ob)

1. Display – This method displays the details of every student.

# Function to display student details     
def display(self, ob):
    print("Name   : ", ob.name)
    print("RollNo : ", ob.rollno)
    print("Marks1 : ", ob.m1)
    print("Marks2 : ", ob.m2)
    print("\n")    

1. Search – This method searches for a particular student from the list of students. This method will ask the user for roll number and then search according to the roll number

# Search Function    
def search(self, rn):
    for i in range(ls.__len__()):
        # iterate through the list containing
        # student object and checks through
        # roll no of each object
        if(ls[i].rollno == rn):
            # returns the object with matching 
            # roll number
            return i 

1. Delete – This method deletes the record of a particular student with a matching roll number.

# Delete Function                                  
def delete(self, rn):
    # Calls the search function 
    # created above
    i = obj.search(rn)  
    del ls[i]

1. Update – This method updates the roll number of the student. This method will ask for the old roll number and new roll number. It will replace the old roll number with a new roll number.

# Update Function   
def update(self, rn, No):
    # calling the search function
    # of student class
    i = obj.search(rn)
    ls[i].rollno = No

Below is the implementation of the above approach: 

Operations used,

1.Accept Student details
2.Display Student Details
3.Search Details of a Student
4.Delete Details of Student
5.Update Student Details
6.Exit



List of Students

Name   :  A
RollNo :  1
Marks1 :  100
Marks2 :  100


Name   :  B
RollNo :  2
Marks1 :  90
Marks2 :  90


Name   :  C
RollNo :  3
Marks1 :  80
Marks2 :  80



 Student Found,
Name   :  B
RollNo :  2
Marks1 :  90
Marks2 :  90


2
List after deletion
Name   :  A
RollNo :  1
Marks1 :  100
Marks2 :  100


Name   :  C
RollNo :  3
Marks1 :  80
Marks2 :  80


2
List after updation
Name   :  A
RollNo :  1
Marks1 :  100
Marks2 :  100


Name   :  C
RollNo :  2
Marks1 :  80
Marks2 :  80


Thank You !

poojathigle

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