[Python-Dev] cpython (2.7): note Ellipsis syntax (original) (raw)
Nick Coghlan ncoghlan at gmail.com
Sun Jul 31 10:15:25 CEST 2011
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On Sun, Jul 31, 2011 at 4:28 PM, Georg Brandl <g.brandl at gmx.net> wrote:
(Also, there must have been some reason to make "..." available everywhere for Python 3.)
Not really - it just let us ditch some special casing in the compilation toolchain that restricted it to being used in subscripts (i.e. we were looking at the question from the "is there a good rationale for keeping this arbitrary restriction?" angle).
Functionality wise, you could already write 'Ellipsis' everywhere you would otherwise have written '...' and you still have to write ':' as 'slice(None)' outside the context of a subscript operation.
Although, as Raymond notes, it can make a nice substitute for 'pass' as a placeholder statement, and can also be used as a placeholder expression.
Cheers, Nick.
-- Nick Coghlan | ncoghlan at gmail.com | Brisbane, Australia
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