Created a codes for school management

School' students details

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+
+# This is simplest Student data management program in python 
+# Create class "Student" 
+
+class Student: 
+
+    # Constructor 
+
+    def __init__(self, name, rollno, m1, m2): 
+
+        self.name = name 
+
+        self.rollno = rollno 
+
+        self.m1 = m1 
+
+        self.m2 = m2 
+
+
+
+    # Function to create and append new student    
+
+    def accept(self, Name, Rollno, marks1, marks2 ): 
+
+        # use  ' int(input()) ' method to take input from user 
+
+        ob = Student(Name, Rollno, marks1, marks2 ) 
+
+        ls.append(ob) 
+
+
+
+    # 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")     
+
+
+
+    # Search Function     
+
+    def search(self, rn): 
+
+        for i in range(ls.__len__()): 
+
+            if(ls[i].rollno == rn): 
+
+                return i        
+
+
+
+    # Delete Function                                   
+
+    def delete(self, rn): 
+
+        i = obj.search(rn)   
+
+        del ls[i] 
+
+
+
+    # Update Function    
+
+    def update(self, rn, No): 
+
+        i = obj.search(rn) 
+
+        roll = No 
+
+        ls[i].rollno = roll; 
+
+
+# Create a list to add Students 
+
+ls =[] 
+# an object of Student class 
+
+obj = Student('', 0, 0, 0) 
+
+
+
+print("\nOperations used, ") 
+
+print("\n1.Accept Student details\n2.Display Student Details\n" /
+
+      / "3.Search Details of a Student\n4.Delete Details of Student" /
+
+      / "\n5.Update Student Details\n6.Exit") 
+
+
+# ch = int(input("Enter choice:")) 
+# if(ch == 1): 
+
+obj.accept("A", 1, 100, 100) 
+
+obj.accept("B", 2, 90, 90) 
+
+obj.accept("C", 3, 80, 80) 
+
+
+# elif(ch == 2): 
+
+print("\n") 
+
+print("\nList of Students\n") 
+
+for i in range(ls.__len__()):     
+
+    obj.display(ls[i]) 
+
+
+# elif(ch == 3): 
+
+print("\n Student Found, ") 
+
+s = obj.search(2) 
+obj.display(ls[s]) 
+
+
+# elif(ch == 4): 
+
+obj.delete(2) 
+
+print(ls.__len__()) 
+
+print("List after deletion") 
+
+for i in range(ls.__len__()):     
+
+    obj.display(ls[i]) 
+
+
+# elif(ch == 5): 
+
+obj.update(3, 2) 
+
+print(ls.__len__()) 
+
+print("List after updation") 
+
+for i in range(ls.__len__()):     
+
+    obj.display(ls[i]) 
+
+
+# else: 
+
+print("Thank You !") 
+