input: def create_person_class():
      """Create a class named Person with two attributes: name and age.
      The class should have an __init__ method to initialize these attributes.
      Return an instance of the class with the name "John" and age 25.
      >>> person = create_person_class()
      >>> person.name
      "John"
      >>> person.age
      25
      """
      class Person:
          def __init__(self, name, age):
              self.name = name
              self.age = age
      return Person("John", 25)
output:     class Person:
          def __init__(self, name, age):
              self.name = name
              self.age = age
      return Person("John", 25)