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My guess is this won't have the speed advantage of ?: in C-ish languages, but it's still convenient for conciseness. I'll post a speed comparison later.


Code:

def qco(switch, v1, v2):
     return {True : v1, False : v2}[bool(switch)]

#example
def max(v1, v2)
     return qco(v1 > v2, v1, v2)

Code:
def max(v1, v2):
    return (v1,v2)[not v1 > v2]


Evil or Very Mad

Edit:
Oh, and apparently Python 2.5 added functionality that lets you do this:

Code:
def max(v1, v2):
    return v1 if v1 > v2 else v2
the point of that is not the max function, that's just the example usage Razz it's the qco function simulating ?:

I didn't realize boolean values would be automatically int()d when used as slice indexes.

In this case, my function would take the form

Code:

def qco(switch, v1, v2):
    return (v1, v2)[not switch]



[edit]
wtf? really? After years of stonewalling and offering hackish solutions?

[edit2]


The real way, for everyone who hasn't upgraded to 2.5:


Code:
(switch and [v1] or [v2])[0]


or


Code:
(lambda: v1, lambda: v2)[not switch]()
  
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