input: Write a function to design a basic chatbot in Python for responding to casual inquiries. The chatbot should provide random responses from a predefined list of answers. Ensure the chatbot can maintain a simple conversation and ends when the user types 'Goodbye'.
  
  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
  
  import random
  assert chatbot_response('What is Python?') in ["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!"]
  assert chatbot_response('How are you?') in ["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!"]
  assert chatbot_response('Goodbye') in ["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!"]
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