[Python-ideas] Allow filter(items)

[Shane Green]

On Aug 6, 2013, at 1:25 AM, Chris Angelico <rosuav at gmail.com> wrote:

>> Are `if bool(...)` or `if bool(...) == True` more readable than `if ...`?

That highlights the repetitive–rather that explicit–nature of bool in this application.  

The fact is that None symbolized the identity function (as does bool, it would appear) in this case, and it makes perfect sense to replace the identity function f(x) and input x with x itself; it also makes perfect sense to have a filter function that operates on a collection without a predicate, making predicate an optional transformation.  




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