roll no typecasted to int

demo/src/student_management.py

@@ -27,6 +27,7 @@ def add_student(self, roll_no, name, age, grade):
         return True, "Student added successfully"
 
     def get_student(self, roll_no):
+        roll_no = int(roll_no)#typecasting to integer
         for student in self.students:
             if student.roll_no == roll_no:
                 return student