Printing data members of a class
John Fisher
jfisher at are.berkeley.edu
Fri Sep 3 15:51:01 EDT 1999
In article <m3iu5ucidh.fsf at atrus.jesus.cam.ac.uk>,
Michael Hudson <mwh21 at cam.ac.uk> wrote:
> John Fisher <jfisher at are.berkeley.edu> writes:
> >
> > >>> class x:
> > ... data = array([1, 2])
>
> Honk! Honk! You don't actually write it like that do you? You're
> setting yourself up for the famous mutable class attribute problem.
Oh, no! The utility of that class would be pretty limited anyway. I
was just trying to fabricate the simplest example that illustrated my
problem.
> A point to bear in mind: __repr__ must return a string. Don't do this:
>
> class x:
> ...
> def __repr__(self):
> print self.data
>
> do this:
>
> class x:
> ...
> def __repr__(self):
> return `self.data`
>
> This trips me up every now and again.
Heh heh. How about:
class x:
...
def __repr__(self):
print self.data,
return ''
But seriously, thanks for the replies, guys.
> HTH,
> Michael
>
John
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