input: Write a python function to create a class Person with a constructor that takes a name and a greet method that prints "Hello, my name is {name}".
  assert isinstance(Person("Alice"), Person)
  assert Person("Alice").name == "Alice"
  assert Person("Bob").greet() == "Hello, my name is Bob"
output: class Person:
      def __init__(self, name):
          self.name = name
      
      def greet(self):
          return f"Hello, my name is {self.name}"