PEP308: Yet another syntax proposal

[James J. Besemer]

Aahz wrote:

> That's still not addressing my point: how often is short-circuit
> evaluation needed?  

This is pure rhetoric.  It's impossible to answer.

Otherwise, tell us what is is the "correct" answer?  10% of the time?  1%? 
0.1%?  There is no correct answer.

How often are list comprehensions needed?  Booleans needed?

Python already wisely recognizes the need for short-circuit within 
expressions.  But and/or is not powerful enough.

 > That's the *only* reason to consider conditional
> expressions rather than a new builtin conditional function.

Not true, as I and others have explained at length elsewhere.  Readability 
and maintainability are SERVED by factoring out common sub-expressions from 
the more verbose forms:

     if condition1:
         if condition2
                 targetVar1 = result1
             else:
                 targetVarl = result2		# hidden BUG!!
     else:
         targetVar1 = result3


--jb


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