input:                         
  def send_email_task(recipient_name: str, recipient_email: str, subject: str, message: str) -> None:
      """
      Create a Celery task in Python to send an email.
      >>> send_email_task(recipient_name='John Smith', recipient_email='john@example.com', subject='Hello World', message='This is a test email.')
      None
      """
output:     
      from celery import Celery
  
      app = Celery('tasks', broker='pyamqp://guest@localhost//')
  
      @app.task
      def send_email(recipient_name, recipient_email, subject, message):
          # Simulate sending an email
          print(f"Sending email to {recipient_name} <{recipient_email}>")
          print(f"Subject: {subject}")
          print(f"Message: {message}")
  
      send_email.delay(recipient_name, recipient_email, subject, message)
  