Characters.get('e', 0) tells python to search for The real key 'e' inside the dictionary. If it's not located it returns 0. Since That is The 1st time 'e' is passed with the loop, the character 'e' will not be found in the dictionary nevertheless, And so the get method returns https://riverpkcvl.blogsvirals.com/35419248/new-step-by-step-map-for-lsd-100-ug