Deprecation Warning

[vyshakh krishnan]

Hi everybody,


While porting Zope2 on Python2.5, I am now trying to remove the
deprecation warnings.Most of them are due to the raising of string
exceptions. One of such warnings in the module Products is

/home/zope/ztrunk25/lib/python/OFS/SimpleItem.py:248:
          DeprecationWarning: raising a string exception is deprecated
                      raise error_type, v, tb

These warnings can be removed by changing these string exceptions to
class based exceptions.
Can anyone suggest how these changes can be made?


With regards
Vyshakh
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[Lennart Regebro-2]

On Wed, Jul 23, 2008 at 14:03, vyshakh krishnan
<vyshakh.krishnan@...> wrote:

> Hi everybody,
>
>
> While porting Zope2 on Python2.5, I am now trying to remove the
> deprecation warnings.Most of them are due to the raising of string
> exceptions. One of such warnings in the module Products is
>
> /home/zope/ztrunk25/lib/python/OFS/SimpleItem.py:248:
>          DeprecationWarning: raising a string exception is deprecated
>                      raise error_type, v, tb
>
> These warnings can be removed by changing these string exceptions to
> class based exceptions.
> Can anyone suggest how these changes can be made?

Well, typically you create classes based on Exception or
BaseException, and use them instead.
Maybe you could expand a bit on what your worries are?

--
Lennart Regebro: Zope and Plone consulting.
http://www.colliberty.com/
[phone]
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[Tres Seaver]

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vyshakh krishnan wrote:

> Hi everybody,
>
>
> While porting Zope2 on Python2.5, I am now trying to remove the
> deprecation warnings.Most of them are due to the raising of string
> exceptions. One of such warnings in the module Products is
>
> /home/zope/ztrunk25/lib/python/OFS/SimpleItem.py:248:
>           DeprecationWarning: raising a string exception is deprecated
>                       raise error_type, v, tb
>
> These warnings can be removed by changing these string exceptions to
> class based exceptions.
> Can anyone suggest how these changes can be made?

That code is not in the Products module:  it is inside OFS.SimpleItem's
'raise_standardErrorMessage' method.  Note that the method explicitly
converts the error_type to a string above:  that is the source of the
DeprecationWarning, almost certainly, as there should be no remaining
traces of explicitly-created string exceptions anywhere in the Zope
codebase.


Tres.
- --
===================================================================
Tres Seaver          [phone]          tseaver@...
Palladion Software   "Excellence by Design"    http://palladion.com
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