https://py.ninja/
https://py.ninja/roadmap
https://py.ninja/exercises
https://py.ninja/p/hello-world
https://py.ninja/p/star-triangle
https://py.ninja/p/rectangle-area
https://py.ninja/p/celsius-to-fahrenheit
https://py.ninja/p/shout-it
https://py.ninja/p/count-the-letters
https://py.ninja/p/reverse-a-string
https://py.ninja/p/first-and-last
https://py.ninja/p/shopping-list-update
https://py.ninja/p/total-the-bill
https://py.ninja/p/countdown
https://py.ninja/p/sum-1-to-100
https://py.ninja/p/times-table
https://py.ninja/p/even-or-odd
https://py.ninja/p/grade-the-score
https://py.ninja/p/fizzbuzz