[ http://issues.apache.org/jira/browse/MODPYTHON-12?page=all ]
Nicolas Lehuen resolved MODPYTHON-12:
-------------------------------------
Fix Version: 3.2
Resolution: Fixed
> ImportError: cannot import name publisher
> -----------------------------------------
>
> Key: MODPYTHON-12
> URL: http://issues.apache.org/jira/browse/MODPYTHON-12
> Project: mod_python
> Type: Bug
> Components: importer
> Versions: 3.1.3
> Reporter: Graham Dumpleton
> Fix For: 3.2
> Attachments: package.diff.txt
>
> From mailing list.
> ImportError: cannot import name publisher
> ------------------------------------
> In a directory publisher, setup for mod_python.publisher as described in
> previous email, and with same index.py. Ie.,
> import os
> def index():
> return os.getpid(),__file__
> Now create a parallel directory called "handler" and in its .htaccess file
> add:
> SetHandler python-program
> PythonHandler mptest
> PythonDebug On
> The mptest.py file in that directory should read:
> from mod_python import apache
> import os
> from mod_python import publisher
> def handler(req):
> req.content_type = "text/plain"
> req.send_http_header()
> req.write(str((os.getpid(),__file__)))
> return apache.OK
> Restart Apache to clear caches and access "handler" and "publisher"
> directories in that order. One gets:
> (747, '/Users/grahamd/Sites/handler/mptest.py')
> (747, '/Users/grahamd/Sites/publisher/index.py')
> (747, '/Users/grahamd/Sites/handler/mptest.py')
> (747, '/Users/grahamd/Sites/publisher/index.py')
> Okay, everything is fine.
> Now restart Apache to clear caches and access "publisher" and then
> "handler". Ie., in reverse order. One gets:
> (761, '/Users/grahamd/Sites/publisher/index.py')
> Mod_python error: "PythonHandler mptest"
> Traceback (most recent call last):
> File
> "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/python2.3/site-packages/mod_python/apache.py",
> line 296, in HandlerDispatch
> log=debug)
> File
> "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/python2.3/site-packages/mod_python/apache.py",
> line 421, in import_module
> autoreload=autoreload,log=log,path=path)
> File
> "/System/Library/Frameworks/Python.framework/Versions/2.3/lib/python2.3/site-packages/mod_python/apache.py",
> line 474, in _unsafe_import_module
> module = imp.load_module(mname, f, p, d)
> File "/Users/grahamd/Sites/handler/mptest.py", line 4, in ?
> from mod_python import publisher
> ImportError: cannot import name publisher
> The way in which mod_python.publisher is loaded as PythonHandler,
> if done before being imported explicitly using "import", screws up
> that latter import.
> I know some will scream that I am mixing "import" and "import_module()",
> but since mod_python.publisher is installed into "site-packages", one
> should expect it to work with "import". Whether it does is order dependent.
> Because I use mod_python.publisher in Vampire for its user authentication
> stuff, this problem means that if using Vampire and elsewhere also wanting
> to use mod_python.publisher as PythonHandler, that the Vampire area
> should be setup with its own PythonInterpreter instance.
> Having now remembered this problem, as a workaround in Vampire I
> should probably go and use:
> publisher = apache.import_module("mod_python.publisher")
> instead. At least that way it will work all the time. :-)
> I know my wanting to use internals of mod_python.publisher is the
> exception, but these sort of strange things shouldn't by right happen.
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