Gary Herron <gher...@digipen.edu> writes:
> On 03/25/2015 10:29 AM, Manuel Graune wrote:
>>
>> def test1(a, b, condition="True"):
>> for i,j in zip(a,b):
>> c=i+j
>> if eval(condition):
>> print("Foo")
>>
>> test1([0,1,2,3],[1,2,3,4],"i+j >4")
>> print("Bar")
>> test1([0,1,2,3],[1,2,3,4],"c >4")
>> print("Bar")
>> test1([0,1,2,3],[1,2,3,4],"a[i] >2")
>>
>
> This is nicely done with lambda expressions:
>
> To pass in a condition as a function:
> test1([0,1,2,3],[1,2,3,4], lambda i,j: i+j<4)
>
> To check the condition in the function:
> if condition(i,j):
This seems to be the right direction and a good solution for simple
cases. Unfortunately this:
> To get the full range of conditions, you will need to include all the
> variables needed by any condition you can imagine. So the above suggestions
> may need to be expanded to:
> ... lambda i,j,a,b: ... or whatever
>
> and
> ... condition(i,j,a,b) ... or whatever
>
is not as concise as I had hoped for. Is there a possibility to do
(maybe with a helper function inside the main function's body) solve
this more elegantly? I'm thinking of some combination of e. g. **kwargs,
dir() and introspection.
Regards,
Manuel
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