... Your second question has been answered, but as for your first: what does the closure capture exactly? Scoping in Python is dynamic and lexical. A closure will always remember the name and scope of the variable, not the object it's pointing to. Since all the functions in your example ar...

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...recommended for reasons discussed below). Native App OAuth2 Best Practises Whatever approach you choose (there are a few trade offs to consider), you should pay attention to the best practices as outlined here for Native Apps using OAuth2: https://tools.ietf.org/html/rfc8252 Consider the following o...

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...0 xaaab 0 b 0 abbb 1 a|bbb Note that e.g. aaa|b is the result of join-ing what each group captured with '|'. In this case, group 0 (i.e. what the pattern matched) captured aaa, and group 1 captured b. Lesson: You can capture inside a lookaround. You can use free-spacing to enhance readability. Ste...

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I see the variable $this in PHP all the time and I have no idea what it's used for. I've never personally used it. 10 An...

... What's the idiomatic syntax for prepending to a short python list? You don't usually want to repetitively prepend to a list in Python. If it's short, and you're not doing it a lot... then ok. list.insert The list.insert ...