Python pickle is what other framework calls serialization, marshalling etc. When you hear pickling, think marshalling ie. object graph to intermediate format, and when you hear unpickling, think ...
The standard pickle package provides an excellent default tool for serializing arbitrary python objects and storing them to disk. Standard python also includes broad set of data compression packages.
The popular Python Pickle serialization format, which is common for distributing AI models, offers ways for attackers to inject malicious code that will be executed on computers when loading models ...