text: #We need the webbrowser module to open a trailer link in a browser
  import webbrowser
  
  #Here we define what a movie is:
  class Movie():
      #Documentation that explains what the Movie class does:
      """This class provides a way to store movie related information"""
  
      #CLASS VARIABLE:
      VALID_RATINGS = ["G", "PG", "PG-13", "R"]
      
      #This function creates an instance with four attributes of a movie
      #The four attributes being: the title, storyline, poster, and trailer
      def __init__(self, movie_title, movie_storyline, poster_image, trailer_youtube):
          #INSTANCE VARIABLES:
          self.title = movie_title
          self.storyline = movie_storyline
          self.poster_image_url = poster_image
          self.trailer_youtube_url = trailer_youtube
          
      #This function opens the link of the trailer of the movie that was specified
      def show_trailer(self):
          webbrowser.open(self.trailer_youtube_url)
  