input: def create_person_instance(name: str, age: int) -> str:
      """Creates a Person instance with given name and age, and returns a string
      representation of the Person object.
      >>> create_person_instance("John", 25)
      '<__main__.Person object at 0x00000000000000>'
      """
output:     class Person:
          def __init__(self, name: str, age: int):
              self.name = name
              self.age = age
  
      person = Person(name, age)
      return str(person)