Ruby on Rails is a popular server-side web application framework written in Ruby. While it is not directly related to Python, understanding Ruby on Rails can be advantageous for Python developers as it can enhance their skill set and open up more job opportunities. Both Python and Ruby are high-level, interpreted languages often used for web development, and having versatility in both can make a developer more marketable. This section provides information on job opportunities that require both Python and Ruby on Rails expertise.