Exception in multiple use of xml.dom.minidom.parse()

Alex Martelli aleax at aleax.it
Sat Mar 22 10:09:03 CET 2003


Martin Lüthi wrote:

> Dear Pythonistas
> 
> An exception is trown when I try to parse a several xml files. For the
> first file everything works out as described in the docs (for Python 2.2),
> using
> 
> Python 2.2.2 (#1, Oct 17 2002, 08:48:02)
> [GCC 2.95.3 20010315 (SuSE)] on linux2
> 
> python-docs-2.2p1/lib/module-xml.dom.minidom.html
> 
>>>> from xml.dom.minidom import parse
> 
>>>> dom1 = parse('/my/data1.xml') # parse an XML file by name
> 
> When I try to access an other file
> 
>>>> dom2 = parse('/my/data2.xml')
> 
> I get the following exception
> 
> Traceback (most recent call last):
>   File "<stdin>", line 1, in ?
>   File "/usr/local/lib/python2.2/site-packages/_xmlplus/dom/minidom.py",
>   line 962, in parse
>     return _doparse(pulldom.parse, args, kwargs)
>   File "/usr/local/lib/python2.2/site-packages/_xmlplus/dom/minidom.py",
>   line 953, in _doparse
>     events = apply(func, args, kwargs)
>   File "/usr/local/lib/python2.2/site-packages/_xmlplus/dom/pulldom.py",
>   line 338, in parse
>     parser = xml.sax.make_parser()
>   File "/usr/local/lib/python2.2/site-packages/_xmlplus/sax/sax2exts.py",
>   line 37, in make_parser
>     return XMLParserFactory.make_parser(parser_list)
>   File "/usr/local/lib/python2.2/site-packages/_xmlplus/sax/saxexts.py",
>   line 64, in make_parser
>     return self._create_parser(parser_name)
>   File "/usr/local/lib/python2.2/site-packages/_xmlplus/sax/saxexts.py",
>   line 43, in _create_parser
>     return drv_module.create_parser()
>   File "/usr/local/lib/python2.2/site-packages/_xmlplus/sax/saxexts.py",
>   line 74, in _create_parser
>     raise _exceptions.SAXReaderNotAvailable
> TypeError: __init__() takes at least 2 arguments (1 given)
> 
> Is this the expected behaviour?

Absolutely not, and indeed that traceback is totally weird -- it
points to a raise of SAXReaderNotAvailable but then it gives you
a TypeError instead...!!!

I suspect you may be running afoul of some installation problem
compounded with / hidden by _xmlplus' import tricks.  I am unable
to reproduce your problem with my Python 2.2.2 installation, on
which I seem to have xml 0.5.2 installed in _xmlplus (just reading
the _checkversion.py file in that directory).  Perhaps removing
and reinstalling a stable version of _xmlplus might help you...?


Alex





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