On Jul 26, 2:29 pm, Fredrik Lundh <[EMAIL PROTECTED]> wrote: > Lie wrote: > > Why this generates AttributeError, then not? > > > Python 2.5.2 (r252:60911, Apr 21 2008, 11:17:30) > > [GCC 4.2.3 (Ubuntu 4.2.3-2ubuntu7)] on linux2 > > Type "help", "copyright", "credits" or "license" for more information. > >>>> import xml > >>>> xml.dom > > Traceback (most recent call last): > > File "<stdin>", line 1, in <module> > > AttributeError: 'module' object has no attribute 'dom' > >>>> xml.dom > > <module 'xml.dom' from '/usr/lib/python2.5/xml/dom/__init__.pyc'> > > this is what I get, on both Windows and Linux: > > >>> import xml > >>> xml.dom > Traceback (most recent call last): > File "<stdin>", line 1, in <module> > AttributeError: 'module' object has no attribute 'dom' > >>> xml.dom > Traceback (most recent call last): > File "<stdin>", line 1, in <module> > AttributeError: 'module' object has no attribute 'dom' > > </F>
That was what I would have expected. The submodules shouldn't get imported unless explicitly imported with import xml.dom, but what I see right now in front of me... I wouldn't have believed such thing if this isn't happening right under my eyes. Doing several dir(xml) revealed that xml.dom and xml.parsers appeared only after doing xml.dom and getting AttributeError After further testing, I found that it also happens with xml.parsers, but not xml.sax nor xml.etree, odd thing. And I tried PIL modules, the oddities doesn't happen. Then I tested the email module, the same thing happened: Python 2.5.2 (r252:60911, Apr 21 2008, 11:17:30) [GCC 4.2.3 (Ubuntu 4.2.3-2ubuntu7)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import email >>> dir(email) ['Charset', 'Encoders', 'Errors', 'FeedParser', 'Generator', 'Header', 'Iterators', 'LazyImporter', 'MIMEAudio', 'MIMEBase', 'MIMEImage', 'MIMEMessage', 'MIMEMultipart', 'MIMENonMultipart', 'MIMEText', 'Message', 'Parser', 'Utils', '_LOWERNAMES', '_MIMENAMES', '__all__', '__builtins__', '__doc__', '__file__', '__name__', '__path__', '__version__', '_name', 'base64MIME', 'email', 'importer', 'message_from_file', 'message_from_string', 'mime', 'quopriMIME', 'sys'] >>> email.parser Traceback (most recent call last): File "<stdin>", line 1, in <module> AttributeError: 'module' object has no attribute 'parser' >>> dir(email) ['Charset', 'Encoders', 'Errors', 'FeedParser', 'Generator', 'Header', 'Iterators', 'LazyImporter', 'MIMEAudio', 'MIMEBase', 'MIMEImage', 'MIMEMessage', 'MIMEMultipart', 'MIMENonMultipart', 'MIMEText', 'Message', 'Parser', 'Utils', '_LOWERNAMES', '_MIMENAMES', '__all__', '__builtins__', '__doc__', '__file__', '__name__', '__path__', '__version__', '_name', '_parseaddr', 'base64MIME', 'base64mime', 'charset', 'email', 'encoders', 'errors', 'importer', 'iterators', 'message', 'message_from_file', 'message_from_string', 'mime', 'quopriMIME', 'quoprimime', 'sys', 'utils'] >>> It seems python (or my version of python, which is the one that shipped with Ubuntu) mysteriously imported several modules's submodules in a (seemingly) random, yet consistent manner after an error occurred (as far as now, it seems ANY error would trigger the mysterious submodule import). I got even more head scratching when I see this: Python 2.5.2 (r252:60911, Apr 21 2008, 11:17:30) [GCC 4.2.3 (Ubuntu 4.2.3-2ubuntu7)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> ac Traceback (most recent call last): File "<stdin>", line 1, in <module> NameError: name 'ac' is not defined >>> import xml >>> dir(xml) ['_MINIMUM_XMLPLUS_VERSION', '__all__', '__builtins__', '__doc__', '__file__', '__name__', '__path__', '__version__', 'dom', 'parsers'] >>> The triggering errors happened BEFORE I imported a module, yet later module import would also import submodules If you have any idea what black magic is happening in my computer right now, I'd appreciate it. -- http://mail.python.org/mailman/listinfo/python-list
