> Date: Thu, 23 Sep 2010 05:36:58 -0400
> Subject: Re: [Tutor] pure function problem
> From: jemejo...@gmail.com
> To: tutor@python.org
> CC: rwob...@hotmail.com
>
> The problem is that your class definition doesn't do anything to
> explicitly set those attributes.
>
> On Thu, Sep 23, 2010 at 4:58 AM, Roelof Wobben <rwob...@hotmail.com> wrote:
> <snip>
> > class tijd :
> > pass
>
> You're not doing any explicit setting of attributes at the class level.
>
> <snip>
> > time = tijd()
> > time.hour = 20
> > time.minutes = 20
> > time.seconds = 20
>
> You set them on this instance.
>
> > seconds = 20
> > uitkomst = tijd()
>
> But not on this one.
>
> What you probably want to do is something like this:
>
> class tijd(object):
> def __init__(self):
> self.hour = 20
> self.minutes = 20
> self.seconds = 20
>
> Or if you prefer to set these when you create the instance, you can
> pass in values like this:
>
> class tijd(object):
> def __init__(self, hour=20, minutes=20, seconds=20):
> self.hour = hour
> self.minutes = minutes
> self.seconds = seconds
>
> I noticed something odd just a sec ago. You have this:
> > uitkomst = tijd()
> > uitkomst = increment(time, seconds)
> > print uitkomst.minutes, uitkomst.seconds
>
> You're creating a tijd instance, binding uitkomst to it, then
> overwriting that instance with what you return from increment().
>
> Anyway, hth.
>
> - jmj
Correct,
I try to find a way to solve this error message.
Roelof
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