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Wed Sep 21 03:30:54 CEST 2005 · https://mail.python.org/pipermail/python-dev/2005-September/056601.html

Guido van Rossum wrote:

> I think if we go with (if ... then ... else ...) or (if ...:
> ... else: ...) we'll have to support elif as well:
> 
> (if ... then ... elif ... then ... else ...)
> or
> (if ...: ... elif ...: ... else: ...)

One nice thing about "x if b else y" is that it
chains without needing any more keywords:

   x if b else y if c else z

But if you require parens, it's not so nice:

   (x if b else (y if c else z))

-- 
Greg Ewing, Computer Science Dept, +--------------------------------------+
University of Canterbury,	   | A citizen of NewZealandCorp, a	  |
Christchurch, New Zealand	   | wholly-owned subsidiary of USA Inc.  |
greg.ewing at canterbury.ac.nz	   +--------------------------------------+

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[Python-Dev] Adding a conditional expression in Py3.0