input: Write a function that creates a Python class Person with attributes name (string), age (integer), and email address (string). The class should also have a method toString() that returns a formatted string of the attributes. The function should return the class definition.
  
  def create_person_class():
      class Person:
          def __init__(self, name, age, email):
              self.name = name
              self.age = age
              self.email = email
          
          def toString(self):
              return f"Name: {self.name}, Age: {self.age}, Email: {self.email}"
      return Person
  
  assert create_person_class().__name__ == "Person"
  assert create_person_class()("John Doe", 30, "john.doe@example.com").toString() == "Name: John Doe, Age: 30, Email: john.doe@example.com"
  assert create_person_class()("Jane Smith", 25, "jane.smith@example.com").toString() == "Name: Jane Smith, Age: 25, Email: jane.smith@example.com"
output: def create_person_class():
      class Person:
          def __init__(self, name, age, email):
              self.name = name
              self.age = age
              self.email = email
          
          def toString(self):
              return f"Name: {self.name}, Age: {self.age}, Email: {self.email}"
      return Person