"David C. Ullrich" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] | In article | <[EMAIL PROTECTED]>, | Paddy <[EMAIL PROTECTED]> wrote: | | > True, but None is not a function. It's a sentinel value to turn on the | > functionality. | | Uh, thanks. I think I knew that - I was just suggesting why | the way map works makes sense.
filter(None, iterable) works the same way: None-> identity function, The immediate reason is the Python has no builtin id(). But apparently there is also historical precedent in the functional community for this convention. -- http://mail.python.org/mailman/listinfo/python-list
