Fabio Zadrozny wrote: > Python and Jython import semantics differ on how sub-packages should be > accessed after importing some module: > > Jython 2.1 on java1.5.0 (JIT: null) > Type "copyright", "credits" or "license" for more information. > >>> import xml > >>> xml.dom > <module xml.dom at 10340434> > > Python 2.4.2 (#67, Sep 28 2005, 12:41:11) [MSC v.1310 32 bit (Intel)] on > win32 > Type "help", "copyright", "credits" or "license" for more information. > >>> import xml > >>> xml.dom > Traceback (most recent call last): > File "<stdin>", line 1, in ? > AttributeError: 'module' object has no attribute 'dom' > >>> from xml.dom import pulldom > >>> xml.dom > <module 'xml.dom' from 'C:\bin\Python24\lib\xml\dom\__init__.pyc'> > > Note that in Jython importing a module makes all subpackages beneath it > available, whereas in python, only the tokens available in __init__.py > are accessible, but if you do load the module later even if not getting > it directly into the namespace, it gets accessible too -- this seems > more like something unexpected to me -- I would expect it to be > available only if I did some "import xml.dom" at some point. > > My problem is that in Pydev, in static analysis, I would only get the > tokens available for actually imported modules, but that's not true for > Jython, and I'm not sure if the current behaviour in Python was expected. > > So... which would be the right semantics for this?
the difference in Jython is deliberate. I think the reason was to mimic more the Java style for this, in java fully qualified names always work. In jython importing the top level packages is enough to get a similar effect. This is unlikely to change for backward compatibility reasons, at least from my POV. > > Thanks, > > Fabio > > > ------------------------------------------------------------------------ > > _______________________________________________ > Python-Dev mailing list > Python-Dev@python.org > http://mail.python.org/mailman/listinfo/python-dev > Unsubscribe: > http://mail.python.org/mailman/options/python-dev/pedronis%40strakt.com _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
