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From: Ray on 16 Jul 2010 12:01
class Test:
def __init__(self):
self.value=0
def change(self, val):
self.value=val

if __name__=='__main__':
for x in range(10):
x=Test()
"""
the question is how do i call x.value outside of that for loop?
something like
print x.value ?
"""

thanks for any help.
From: MRAB on 16 Jul 2010 12:17
Ray wrote:
> class Test:
> def __init__(self):
> self.value=0
> def change(self, val):
> self.value=val
>
> if __name__=='__main__':
> for x in range(10):
> x=Test()
> """
> the question is how do i call x.value outside of that for loop?
> something like
> print x.value ?
> """
>
> thanks for any help.

Have you tried it?

Why are you using the same name for the loop variable and the instance
you're creating?
From: Ray on 16 Jul 2010 12:22
On Jul 16, 12:17 pm, MRAB <pyt...(a)mrabarnett.plus.com> wrote:
> Ray wrote:
> > class Test:
> >   def __init__(self):
> >     self.value=0
> >   def change(self, val):
> >     self.value=val
>
> > if __name__=='__main__':
> >   for x in range(10):
> >     x=Test()
> >   """
> >   the question is how do i call x.value outside of that for loop?
> >   something like
> >   print x.value ?
> >   """
>
> > thanks for any help.
>
> Have you tried it?
>
> Why are you using the same name for the loop variable and the instance
> you're creating?

yes. I need to create instance. the code above is just a example.
on real code, it read a dict, and create the instance from dict.keys()
name.
that dict is build dynamic from database.
From: Andre Alexander Bell on 16 Jul 2010 12:37
On 07/16/2010 06:01 PM, Ray wrote:
> if __name__=='__main__':
> for x in range(10):
> x=Test()
> """
> the question is how do i call x.value outside of that for loop?
> something like
> print x.value ?
> """


You would have to keep references to your Test objects (untested code):

if __name__ == '__main__':
test_objects = []
for x in range(10):
test_objects[x] = Test()
print test_objects[0].value
...

You may want to rewrite this as a list comprehension

if __name__ == '__main__':
test_objects = [Test() for i in range(10)]
print test_objects[0].value


Andre

From: Ray on 18 Jul 2010 07:36
thanks a lot. I was really stupid.
of course I should keep a references to use it later.

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