from traitlets import Unicode, HasTraits class Person(HasTraits): name = Unicode() person = Person() person.name = 'John' print(person.name) # Output: JohnThe above code defines a simple `Person` class with a `name` trait of type `Unicode`. An instance of the `Person` class is created and its `name` trait is set to "John". The final `print` statement displays the value of the `name` trait. Description of Example: This example shows how traitlets package can be used to define typed variables such as `Unicode` traits. The `Unicode` trait is used to store text data such as names, addresses, etc. In the given code example, a `Person` class is defined with a `name` trait of type `Unicode`. An instance of `Person` class is created and its `name` trait is set to "John". Finally, the value of `name` trait is printed which is "John". Package Library: The given code example uses the `Unicode` trait from the `traitlets` package which is a part of the larger `ipython_genutils` package library.