input: Write a function to implement a basic chatbot in Python that responds to casual inquiries. The function should randomly select a response from a predefined list of answers and return it. If the user inputs "Goodbye", the chatbot should terminate the conversation.
  import random
  
  answers = ["That's a great question!", 
      "I'm not sure, but I'll try to find out!", 
      "That sounds interesting, tell me more!", 
      "I have no idea, sorry!"]
  
  def chatbot_response(user_input): 
      if user_input == 'Goodbye':
          return 'Goodbye!'
      response = random.choice(answers)
      return response
  
  assert chatbot_response("Hello") in answers
  assert chatbot_response("Goodbye") == 'Goodbye!'
  assert chatbot_response("What's up?") in answers
  assert chatbot_response("Tell me something.") in answers
  assert chatbot_response("Goodbye") == 'Goodbye!'
output: def chatbot_response(user_input): 
      if user_input == 'Goodbye':
          return 'Goodbye!'
      response = random.choice(answers)
      return response