The name Django was chosen by its creators because they were fans of the jazz guitarist Django Reinhardt, while Flask was named as a playful nod to its micro-framework predecessor Bottle, implying it was the next logical step in a chemistry theme. Meanwhile, Ruby on Rails was famously created by David Heinemeier Hansson while he was extracting the codebase from his project management tool Basecamp, which is why it remains so focused on developer productivity and convention over configuration. elaborate