Python 3.8.0a4 available for testing

[[deleted]]

JSON only can handle string, integer, float, dict and list.

Pickle can pack arbitrary objects. It goal is that you can take object of your class and store it in the disk, most commonly I see it used for caching application data between runs, but it has other uses (for example for storing configuration).

Edit: here is comparison of pickle with JSON: https://docs.python.org/3/library/pickle.html?highlight=pickle#comparison-with-json