input: Write a python function to get Twitter user details using Tweepy.
  assert get_twitter_user_details('@twitter') == {'name': 'Twitter', 'location': 'San Francisco, CA', 'followers_count': 58500000, 'profile_image_url': 'http://abs.twimg.com/sticky/default_profile_images/default_profile_normal.png'}
  assert get_twitter_user_details('@example') == {'name': 'Example User', 'location': 'Example Location', 'followers_count': 12345, 'profile_image_url': 'http://abs.twimg.com/sticky/default_profile_images/default_profile_normal.png'}
output: import tweepy
  
  def get_twitter_user_details(username):
      # You need to replace the below values with your actual Twitter API keys
      consumer_key = 'your_consumer_key'
      consumer_secret = 'your_consumer_secret'
      access_token = 'your_access_token'
      access_token_secret = 'your_access_token_secret'
  
      # Authenticate to Twitter
      auth = tweepy.OAuthHandler(consumer_key, consumer_secret)
      auth.set_access_token(access_token, access_token_secret)
  
      # Create API object
      api = tweepy.API(auth)
  
      # Get user details
      user = api.get_user(screen_name=username)
  
      # Return user details in the required format
      return {
          'name': user.name,
          'location': user.location,
          'followers_count': user.followers_count,
          'profile_image_url': user.profile_image_url_https
      }