New submission from colin <[email protected]>:
The essence of the problem is if you have a trailing slash in your import path, twisted asserts that the stripped module path is '''''in''''' the python import cache. Obviously "''''''/foo/bar' in {'/foo/bar/':None}'''''" never matches anything, then many kittens die.
{{{
import sys
sys.path.append('/usr/local/tcs/tums/lib/')
}}}
Worlds largest traceback commenses here
{{{
2009-07-13 09:22:45+0200 [HTTPChannel,1,172.31.0.127] Unhandled Error
Traceback (most recent call last):
File "/usr/local/tcs/tums/lib/nevow/rend.py", line 572, in _renderHTTP
return self.flattenFactory(doc, ctx, writer, finisher)
File "/usr/local/tcs/tums/lib/nevow/rend.py", line 531, in <lambda>
flattenFactory = lambda self, *args: flat.flattenFactory(*args)
File "/usr/local/tcs/tums/lib/nevow/flat/__init__.py", line 14, in flattenFactory
return deferflatten(stan, ctx, writer).addCallback(finisher)
File "/usr/local/tcs/tums/lib/nevow/flat/twist.py", line 63, in deferflatten
_drive(iterable, finished)
--- <exception caught here> ---
File "/usr/local/tcs/tums/lib/nevow/flat/twist.py", line 24, in _drive
next = iterable.next()
File "/usr/local/tcs/tums/lib/nevow/flat/ten.py", line 83, in iterflatten
for item in gen:
File "/usr/local/tcs/tums/lib/nevow/flat/flatstan.py", line 103, in TagSerializer
yield serialize(toBeRenderedBy, context)
File "/usr/local/tcs/tums/lib/nevow/flat/ten.py", line 70, in serialize
return partialflatten(context, obj)
File "/usr/local/tcs/tums/lib/nevow/flat/ten.py", line 61, in partialflatten
return flattener(obj, context)
File "/usr/local/tcs/tums/lib/nevow/flat/flatstan.py", line 264, in DirectiveSerializer
return serialize(renderer, context)
File "/usr/local/tcs/tums/lib/nevow/flat/ten.py", line 70, in serialize
return partialflatten(context, obj)
File "/usr/local/tcs/tums/lib/nevow/flat/ten.py", line 61, in partialflatten
return flattener(obj, context)
File "/usr/local/tcs/tums/lib/nevow/flat/flatstan.py", line 247, in MethodSerializer
return FunctionSerializer(original, context, nocontext)
File "/usr/local/tcs/tums/lib/nevow/flat/flatstan.py", line 236, in FunctionSerializer
result = original(context, data)
File "/usr/local/tcs/tums/lib/nevow/athena.py", line 1064, in render_liveglue
in self._getRequiredModules()],
File "/usr/local/tcs/tums/lib/nevow/athena.py", line 755, in _getRequiredModules
in self._getModuleForClass().allDependencies()
File "/usr/local/tcs/tums/lib/nevow/athena.py", line 742, in _getModuleForClass
return jsDeps.getModuleForClass(self.jsClass)
File "/usr/local/tcs/tums/lib/nevow/athena.py", line 301, in getModuleForName
self.mapping.update(allJavascriptPackages())
File "/usr/local/tcs/tums/lib/nevow/athena.py", line 273, in allJavascriptPackages
for p in plugin.getPlugIns(inevow.IJavascriptPackage, plugins):
File "/usr/lib/python2.5/site-packages/twisted/plugin.py", line 200, in getPlugins
allDropins = getCache(package)
File "/usr/lib/python2.5/site-packages/twisted/plugin.py", line 131, in getCache
mod = getModule(module.__name__)
File "/usr/lib/python2.5/site-packages/twisted/python/modules.py", line 741, in getModule
return theSystemPath[moduleName]
File "/usr/lib/python2.5/site-packages/twisted/python/modules.py", line 677, in __getitem__
self._findEntryPathString(moduleObject)),
File "/usr/lib/python2.5/site-packages/twisted/python/modules.py", line 630, in _findEntryPathString
rval, modobj, pformat(self.importerCache))
exceptions.AssertionError: '/usr/local/tcs/tums/lib' for <module 'nevow.plugins' from '/usr/local/tcs/tums/lib/nevow/plugins/__init__.pyc'> not in import cache {'.': None,
'/usr/lib/python2.5': None,
'/usr/lib/python2.5/': None,
'/usr/lib/python2.5/ctypes': None,
'/usr/lib/python2.5/email': None,
'/usr/lib/python2.5/email/mime': None,
'/usr/lib/python2.5/lib-dynload': None,
'/usr/lib/python2.5/lib-tk': None,
'/usr/lib/python2.5/plat-linux2': None,
'/usr/lib/python2.5/site-packages': None,
'/usr/lib/python2.5/site-packages/Crypto': None,
'/usr/lib/python2.5/site-packages/Crypto/Cipher': None,
'/usr/lib/python2.5/site-packages/Crypto/Hash': None,
'/usr/lib/python2.5/site-packages/Crypto/PublicKey': None,
'/usr/lib/python2.5/site-packages/Crypto/Util': None,
'/usr/lib/python2.5/site-packages/PIL': None,
'/usr/lib/python2.5/site-packages/cairo': None,
'/usr/lib/python2.5/site-packages/pysqlite2': None,
'/usr/lib/python2.5/site-packages/twisted': None,
'/usr/lib/python2.5/site-packages/twisted/application': None,
'/usr/lib/python2.5/site-packages/twisted/conch': None,
'/usr/lib/python2.5/site-packages/twisted/conch/insults': None,
'/usr/lib/python2.5/site-packages/twisted/conch/ssh': None,
'/usr/lib/python2.5/site-packages/twisted/cred': None,
'/usr/lib/python2.5/site-packages/twisted/internet': None,
'/usr/lib/python2.5/site-packages/twisted/mail': None,
'/usr/lib/python2.5/site-packages/twisted/persisted': None,
'/usr/lib/python2.5/site-packages/twisted/protocols': None,
'/usr/lib/python2.5/site-packages/twisted/python': None,
'/usr/lib/python2.5/site-packages/twisted/scripts': None,
'/usr/lib/python2.5/site-packages/twisted/spread': None,
'/usr/lib/python2.5/site-packages/twisted/trial': None,
'/usr/lib/python2.5/site-packages/twisted/web': None,
'/usr/lib/python2.5/site-packages/zope': None,
'/usr/lib/python2.5/site-packages/zope/interface': None,
'/usr/lib/python2.5/xml': None,
'/usr/lib/python2.5/xml/parsers': None,
'/usr/lib/python2.5/xml/sax': None,
'/usr/local/lib/python2.5/site-packages': None,
'/usr/local/tcs/tums': None,
'/usr/local/tcs/tums/lang': None,
'/usr/local/tcs/tums/lang/en': None,
'/usr/local/tcs/tums/lib/': None,
'/usr/local/tcs/tums/lib/axiom': None,
'/usr/local/tcs/tums/lib/epsilon': None,
'/usr/local/tcs/tums/lib/formal': None,
'/usr/local/tcs/tums/lib/formal/widgets': None,
'/usr/local/tcs/tums/lib/formless': None,
'/usr/local/tcs/tums/lib/nevow': None,
'/usr/local/tcs/tums/lib/nevow/flat': None,
'/usr/local/tcs/tums/lib/nevow/plugins': None,
'/usr/local/tcs/tums/lib/nevow/taglibrary': None,
'/usr/local/tcs/tums/lib/pycha': None,
'/usr/local/tcs/tums/lib/reportlab': None,
'/usr/local/tcs/tums/lib/reportlab/lib': None,
'/usr/local/tcs/tums/lib/reportlab/pdfbase': None,
'/usr/local/tcs/tums/lib/reportlab/pdfgen': None,
'/usr/local/tcs/tums/lib/reportlab/platypus': None,
'/usr/local/tcs/tums/lib/sasync': None,
'/usr/local/tcs/tums/lib/sqlalchemy': None,
'/usr/local/tcs/tums/lib/sqlalchemy/databases': None,
'/usr/local/tcs/tums/lib/sqlalchemy/engine': None,
'/usr/local/tcs/tums/lib/sqlalchemy/orm': None,
'/var/lib/python-support/python2.5': None,
'/var/lib/python-support/python2.5/MySQLdb': None,
'/var/lib/python-support/python2.5/MySQLdb/constants': None,
'/var/lib/python-support/python2.5/OpenSSL': None}
2009-07-13 09:22:46+0200 [HTTPChannel,1,172.31.0.127] <class 'nevow.stan.raw'> ERROR
...
}}}
----------
Type : defect
Component: core
Keywords :
Priority : normal
Nosy :
----------
http://twistedmatrix.com/trac/ticket/3913
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