Tạo một lớp chắt (grandchild)

# Define a Tweet class that inherits from SocialMedia
class Tweets(____):
    def __init__(self, text):
        # Call parent's __init__ with super()
        ____
        # Define retweets attribute with non-public method
        self.retweets = self._process_retweets()

    def _process_retweets(self):
        # Filter tweet text to only include retweets
        retweet_text = filter_lines(self.text, ____='RT')
        # Return retweet_text as a SocialMedia object
        return ____(retweet_text)