Andrea Crotti <andrea.crott...@gmail.com> wrote:
> I'm not sure for how long I had this bug, and I could not understand
> the problem.
>
> I had a function which would return a boolean
>
> def func_bool():
> if x:
> return True
> else: return False
>
> Now somewhere else I had
>
> if func_bool:
> # do something
>
> I could not quite understand why it was always true, until I finally
> noticed that the () were missing.
> Is there some tool to avoid these stupid mistakes? (pylint doesn't
> warn me on that)
> I don't think I will ever (or almost) have to use a function as a
> boolean, instead of its return value...
For this particular example why don't you just write 'if x: # do
something'?
More generally rather than having a global function make it a property on
an object.
class Snark:
def __init__(self, something):
self.boojum = ...
@property
def is_a_bookum(self):
return self.boojum
hunted = Snark(whatever)
Then you can write:
if hunted.is_a_boojum:
self.vanish_away()
--
Duncan Booth http://kupuguy.blogspot.com
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