input: Write a function to create a Python class with the given attributes and functions. The attributes include name (string), age (integer), and email address (string). The function toString() should return a string with the formatted attributes.
  
  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}"
          
  assert Person("John Doe", 30, "john@example.com").toString() == "Name: John Doe, Age: 30, Email: john@example.com"
  assert Person("Jane Doe", 25, "jane@example.com").toString() == "Name: Jane Doe, Age: 25, Email: jane@example.com"
  assert Person("Sam Smith", 35, "sam@example.com").toString() == "Name: Sam Smith, Age: 35, Email: sam@example.com"
  assert Person("Alice Johnson", 28, "alice@example.com").toString() == "Name: Alice Johnson, Age: 28, Email: alice@example.com"
  assert Person("Bob Brown", 40, "bob@example.com").toString() == "Name: Bob Brown, Age: 40, Email: bob@example.com"
output: 
  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}"
  