input: Write a python function to create a Student object and check its attributes.
  assert create_student('John Doe', 20, 3.5).name == 'John Doe'
  assert create_student('John Doe', 20, 3.5).age == 20
  assert create_student('John Doe', 20, 3.5).gpa == 3.5
output: def create_student(name, age, gpa):
      class Student:
          def __init__(self, name, age, gpa):
              self.name = name
              self.age = age
              self.gpa = gpa
  
      return Student(name, age, gpa)