input: Write a python function to create a Person object from a dictionary.
  assert create_person({'name': 'Alice', 'age': 30, 'city': 'New York'}).name == 'Alice'
  assert create_person({'name': 'Bob', 'age': 25, 'city': 'Los Angeles'}).age == 25
  assert create_person({'name': 'Charlie', 'age': 35, 'city': 'Chicago'}).city == 'Chicago'
output: def create_person(person_dict):
      class Person:
          def __init__(self, name, age, city):
              self.name = name
              self.age = age
              self.city = city
      
      return Person(person_dict['name'], person_dict['age'], person_dict['city'])