If you just use <dictionary>[<key>] = <value> and if the key doesn't exist, the key will be automatically added. – Jyotirmay Kumar Jha. Dec 30 '20 at 5:23. Re ... ... <看更多>

The technique is when you have a python dictionary and a function that you intend to use on it. You insert an extra element into the dict, whose value is ... ... <看更多>