[Tutor] Package loading

[Karim]

On 11/30/2010 12:58 AM, Karim wrote:
> On 11/29/2010 09:15 PM, Karim wrote:
>>
>> Hello every one,
>>
>> I created a package with the following structure:
>>
>>     * ops/
>>           o __init__.py
>>           o tcl/
>>                 + __init__.py
>>                 + pythontcl.py
>>
>>
>>
>> > *python -c "import sys; print sys.path; import ops.tcl.pythontcl"*
>>
>> ['', 
>> '/usr/local/lib/python2.6/dist-packages/pyparsing-1.5.5-py2.6.egg', 
>> '*/home/karim/build/UML2PDK/lib/python*', '/usr/lib/python2.6', 
>> '/usr/lib/python2.6/plat-linux2', '/usr/lib/python2.6/lib-tk', 
>> '/usr/lib/python2.6/lib-old', '/usr/lib/python2.6/lib-dynload', 
>> '/usr/lib/python2.6/dist-packages', 
>> '/usr/lib/python2.6/dist-packages/PIL', 
>> '/usr/lib/python2.6/dist-packages/gst-0.10', 
>> '/usr/lib/pymodules/python2.6', 
>> '/usr/lib/python2.6/dist-packages/gtk-2.0', 
>> '/usr/lib/pymodules/python2.6/gtk-2.0', 
>> '/usr/lib/python2.6/dist-packages/wx-2.8-gtk2-unicode', 
>> '/usr/local/lib/python2.6/dist-packages']
>> /*home/karim/build/UML2PDK/lib/python/ops/tcl/pythontcl.py:109: 
>> RuntimeWarning: Parent module 'pythontcl' not found while handling 
>> absolute import
>>   import unittest
>> /home/karim/build/UML2PDK/lib/python/ops/tcl/pythontcl.py:110: 
>> RuntimeWarning: Parent module 'pythontcl' not found while handling 
>> absolute import
>>   import sys*
>>
>> At the lines I import standard modules sys and unittest I get these 
>> non-sense warning (my consideration) though I added the top package 
>> root, namely, */home/karim/build/UML2PDK/lib/python. The 
>> programesecute correctly but I alaways get this nerving warning.
>>
>> *Any idea will be welcome!* :-)
>>
>> *Regards
>> Karim*
>> *
>
> I believed I know why:
>
> Traceback (most recent call last):
>   File "<string>", line 1, in <module>
>   File "/home/karim/build/UML2PDK/lib/python/ops/tcl/pythontcl.py", 
> line 119, in <module>
>     print sys.modules[__package__]
> KeyError: 'pythontcl'
>
> It is due to method determine parent in class ModuleImporter.
> I don't know why sys.modules has the key 'ops.tcl.pythontcl'
> and this class search for the key module 'pythontcl'.
>
> Big mess between relative path or whatever.
>
> Any idea to fix that?
>
> Karim
>

Ok fixed.
I must not set the special variable __name__. I set it for pydoc docstrings.
Now the __name__ is automatically set to 'ops.tcl.pythontcl' and 
__package__ is set correctly to 'ops.tcl'.

Kind Regards
Karim
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