dynamic functions

[holger krekel]

Uwe Mayer wrote:
> I want to concatenate boolean functions, i.e. lambda x: x < 10; during 
> runtime with "and" and "or".
> However something like:
> 
> d = lambda x: x < 10
> d = lambda x: d(x) and (x %2 == 0)

note that the name 'd' in 'd(x)' is *not* resolved at definition time. 
this happens at calling time. But at calling time of 'd' you call
'd' again and again ...

> won't work and will end up in an infinite recursion (as far as I can 
> figure out).
> How do you do something like that in python?

you don't use confusing names:

func1 = lambda x: x < 10
func2 = lambda x: func1(x) and (x%2==0)

regards,

    holger