input: Write a function to create a basic chatbot in Python that responds to casual inquiries. The function should take user input as a parameter and return a random response from a predefined list of possible answers. If the user inputs 'Goodbye', the chatbot should terminate the conversation.
  def chatbot_response(user_input):
      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!"]
      response = random.choice(answers)
      return response
  assert chatbot_response("What's up?")==answers[0] or chatbot_response("What's up?")==answers[1] or chatbot_response("What's up?")==answers[2] or chatbot_response("What's up?")==answers[3]
  assert chatbot_response("Goodbye")==answers[0] or chatbot_response("Goodbye")==answers[1] or chatbot_response("Goodbye")==answers[2] or chatbot_response("Goodbye")==answers[3]
output: 
  def chatbot_response(user_input):
      if user_input == "Goodbye":
          return "Goodbye"
      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!"]
      response = random.choice(answers)
      return response
  