using a combination of each party's private key and the other party's
timeout: float | None = None,
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Please take my explanations of how function calls, and exceptions work here as illustrative rather than literal. I wanted to give an example of the kind of thing the computer is doing without getting too bogged down in how the computer actually does it. The aim of this is to think more about how control flow works with different languages, rather than how you’d actually implement it.