How to print lambda result ?

[Tino Wildenhain]

Hi,

Barak, Ron wrote:
> Hi,
> 
> Wanting to print the correct plural after numbers, I did the following:
> 
> for num in range(1,4):
>     string_ = "%d event%s" % (num,lambda num: num > 1 and "s" or "")
>     print string_
> 
> However, instead of getting the expected output:
> 
> 1 event
> 2 events
> 3 events
> 
> I get:
> 
> 1 event<function <lambda> at 0x00AFE670>
> 2 event<function <lambda> at 0x00AFE670>
> 3 event<function <lambda> at 0x00AFE6B0>

lambda creates a function so this is the result you
are seeing. You would need to call the function
to get your result.

(num,(lambda n: n >1 and "s" or "")(num))

which is just a quite useless application
of lambda :-)

(num,num >1 and "s" or "")

or even

(num,"s" if num >1 else "")

in python > 2.5

or in python <3.0:

(num,"s"*(num >1))

:-)

HTH
Tino
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