On May 25, 7:44 pm, kaens <[EMAIL PROTECTED]> wrote:
> So, I have a class that has to retrieve some data from either xml or
> an sql database.
> This isn't a problem, but I was thinking "hey, it would be cool if I
> could just not define the functions for say xml if I'm using sql", so
> I did some fiddling around with the interpreter.
>
> First, I try conditionally creating a function, period:
>
> a = 'a'
>
> if(a == 'a')
> def b:
> print "hello"
> else:
> def c:
> print "goodbye"
>
> this works fine. b is defined, c is not. change the value of a and b
> gets defined and not c (sorry for the one-letter variables here, but
> for these little examples I don't think they detract much)
>
> then I try doing this within a function:
>
> class test:
> def __init__(self,which):
> self.which = which
>
> if(self.which == 'a'):
> def b:
> print "hello"
> else:
> def c:
> print "goodbye"
>
> tester = test('a')
> tester.b()
> ...
class Test:
def __init__(self, which):
self.which = which
if which == 'a':
self.__class__ = TestB
else:
self.__class__ = TestC
class TestB(Test):
def b(self):
print "hello"
class TestC(Test):
def c(self):
print "goodbye"
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