[Distutils] problems with namespace package

[Tres Seaver]

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Manlio Perillo wrote:
> Hi.
> 
> I have a package named A, with a subpackage B, and I want to create a
> namespace package A.B.C.

In your examples, it seems as though you want 'A' and 'A.B' to be
namespace packages, but 'A.B.C' is a "normal" package.

> In the namespace package setup file I set
>   namespace_packages=['A', 'A.B'],
> 
> and I use declare_namespace in both A/__init__.py and A/B/__init__.py
> modules.

Are you sure there is no other code in 'A/__init__.py' and
'A/B/__init__.py' of either package? See:

 http://peak.telecommunity.com/DevCenter/setuptools#namespace-packages

> However if I:
> 1) install A package
> 2) install A.B.C package
> 
> importing A.B.C will raise an ImportError exception.
> 
> If I reinstall A package, then it seems to work.
> 
> Where is the problem?

You might compare your setup.py and __init__.py with those in one of the
'zope.app' packages, which successfully use nested namespace packages.
E.g. for zope.app.annotation:

http://svn.zope.org/repos/main/zope.app.annotation/trunk/setup.py
 http://svn.zope.org/repos/main/zope.app.annotation/trunk/src/zope/__init__.py

http://svn.zope.org/repos/main/zope.app.annotation/trunk/src/zope/app/__init__.py


Tres.
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Tres Seaver          +1 540-429-0999          tseaver at palladion.com
Palladion Software   "Excellence by Design"    http://palladion.com
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