you need to check if dictionary key exists, else you get an exception when trying to get the keys value. What should be the correct behavior when accessing a k

you need to check if dictionary key exists, else you get an exception when trying to get the keys value. What should be the correct behavior when accessing a key that doesn't exists? If you want a specific default value when a key doesn't exist you can use the get() method. Also ':' at the end of each line. What do you mean? You don't need ':' at the end of each line, only at the start of a block (basically anywhere you'd use a '{' in other languages).