What interested me is the discussion about naming (re-use of callback, "errback", "Failure" etc.). That sort of discussion quite often smacks of bike-shedding,

What interested me is the discussion about naming (re-use of callback, "errback", "Failure" etc.). That sort of discussion quite often smacks of bike-shedding, but Guido's points here made me release how clear and simple a lot of the naming in Python is, and how much that adds to readability and ease of understanding of code. Clearly a lot of thought along the lines of "this should be a verb" has gone into the standard library and choice of language keywords, and this has spread to code built on top. Without realising it, this is one of the things that has drawn me to Python. I'll stop taking it for granted now, pay attention to how it's done, and maybe my own code will benefit.