[IronPython] from xml import xpath
Simon Dahlbacka
simon.dahlbacka at gmail.com
Fri May 19 19:34:09 CEST 2006
Re pyd:s playing tricks..
In this case it's not any pyd:s that is playing tricks but
C:\Python24\Lib\xml\__init__.py :
_MINIMUM_XMLPLUS_VERSION = (0, 8, 4)
try:
import _xmlplus
except ImportError:
pass
else:
try:
v = _xmlplus.version_info
except AttributeError:
# _xmlplus is too old; ignore it
pass
else:
if v >= _MINIMUM_XMLPLUS_VERSION:
import sys
sys.modules[__name__] = _xmlplus
else:
del v
(PyXML installs itself as _xmplus)
On 5/19/06, Dino Viehland <dinov at exchange.microsoft.com> wrote:
>
> This is probably really tough to do – in order to know the PYD is playing
> tricks we'd need to support using the PYD, and then it's not a problem
> anymore. I'll open a bug on this anyway to see if we can make the
> experience better, but I have no idea what sort of time frame we'd be able
> to do this in (another option for us would be to create an xpath wrapper
> around System.Xml.XPath which looks like pyxml, but it'd not solve any
> larger problems around PYDs in general).
>
>
>
> Do you want to help develop Dynamic languages on CLR?<http://members.microsoft.com/careers/search/details.aspx?JobID=6D4754DE-11F0-45DF-8B78-DC1B43134038>
> (
> http://members.microsoft.com/careers/search/details.aspx?JobID=6D4754DE-11F0-45DF-8B78-DC1B43134038
> )
> ------------------------------
>
> *From:* users-bounces at lists.ironpython.com [mailto:
> users-bounces at lists.ironpython.com] *On Behalf Of *Greg Lee
> *Sent:* Friday, May 19, 2006 10:18 AM
>
> *To:* Discussion of IronPython
> *Subject:* Re: [IronPython] from xml import xpath
>
>
>
> Is a better diagnostic message possible? This would let us distinguish a
> pyd problem from "playing tricks with paths", and presumably there might be
> some value in fixing any problems in the latter.
>
> -----Original Message-----
> *From:* users-bounces at lists.ironpython.com [mailto:
> users-bounces at lists.ironpython.com]*On Behalf Of *Dino Viehland
> *Sent:* Wednesday, May 17, 2006 11:50 AM
> *To:* Discussion of IronPython
> *Subject:* Re: [IronPython] from xml import xpath
>
> You're right, I did miss that… Looking at this page:
> http://pyxml.sourceforge.net/topics/howto/section-install.html It would
> seem that you may be right about the Pyd's (it at least requires a C
> compiler, making that likely – and almost guaranteeing it won't work w/
> IronPython).
>
>
>
> Unfortunately we don't support PYD's currently (and aren't likely to soon)
> so most likely this won't currently work. If you absolutely need XPath
> support in the mean time I'd suggest using .NET's XMLPath (and if you need
> to work on both you could make a thin wrapper over either PyXml for CPython
> and .NET's XPath support). For example:
>
>
>
> import clr
>
> clr.AddReference('System.Xml')
>
> import System.Xml.XPath as XPath
>
>
>
> xpathDoc = XPath.XPathDocument('file://foo.txt')
>
>
>
>
>
>
>
> Do you want to help develop Dynamic languages on CLR?<http://members.microsoft.com/careers/search/details.aspx?JobID=6D4754DE-11F0-45DF-8B78-DC1B43134038>
> (
> http://members.microsoft.com/careers/search/details.aspx?JobID=6D4754DE-11F0-45DF-8B78-DC1B43134038
> )
> ------------------------------
>
> *From:* users-bounces at lists.ironpython.com [mailto:
> users-bounces at lists.ironpython.com] *On Behalf Of *Simon Dahlbacka
> *Sent:* Wednesday, May 17, 2006 11:41 AM
> *To:* Discussion of IronPython
> *Subject:* Re: [IronPython] from xml import xpath
>
>
>
> Dino, you seemed to have missed the part about pyxml..
>
> It works in cpython with pyxml installed. However, pyxml is playing tricks
> with paths etc, and there might even be pyd:s involved..
>
> C:\Python24>python.exe
> Python 2.4.1 (#65, Mar 30 2005, 09:13:57) [MSC v.1310 32 bit (Intel)] on
> win32
> Type "help", "copyright", "credits" or "license" for more information.
> >>> import xml
> >>> xml.__file__
> 'C:\\Python24\\lib\\site-packages\\_xmlplus\\__init__.pyc'
> >>> from xml import xpath
> >>>
>
> On 5/17/06, *Dino Viehland* <dinov at exchange.microsoft.com> wrote:
>
> This doesn't work for my in CPython 2.4 either, so I think the docs are
> wrong:
>
>
>
> >>> from xml import xpath
>
> Traceback (most recent call last):
>
> File "<stdin>", line 1, in ?
>
> ImportError: cannot import name xpath
>
> >>> import sys
>
> >>> sys.version
>
> '2.4.2 (#67, Sep 28 2005, 12:41:11) [MSC v.1310 32 bit (Intel)]'
>
> >>>
>
>
>
> Do you want to help develop Dynamic languages on CLR?<http://members.microsoft.com/careers/search/details.aspx?JobID=6D4754DE-11F0-45DF-8B78-DC1B43134038>
> (http://members.microsoft.com/careers/search/details.aspx?JobID=6D4754DE-11F0-45DF-8B78-DC1B43134038
> )
> ------------------------------
>
> *From:* users-bounces at lists.ironpython.com [mailto:users-bounces at lists.ironpython.com]
> *On Behalf Of *Greg Lee
> *Sent:* Tuesday, May 16, 2006 3:17 PM
> *To:* users at lists.ironpython.com
> *Subject:* [IronPython] from xml import xpath
>
>
>
> I'm porting an application that uses PyXML. The following from the PyXml
> documentation http://pyxml.sourceforge.net/topics/howto/section-XPath.htmldoesn't work:
>
> from xml import xpath
> Traceback (most recent call last):
> File , line 0, in input##113
> ImportError: cannot import xpath from xml
>
> Any suggestions? I messed around with adding site-packages to
> IRONPYTHONPATH but other BadThings happened.
>
> Here's the installation:
>
> Microsoft Windows XP [Version 5.1.2600]
> IronPython 1.0.60420 (Beta) on .NET 2.0.50727.42
>
> python 2.4.2
> pyxml 0.8.4
> pywin32 205
> py2exe 0.6.3
>
> IRONPYTHONPATH = c:\python24\lib
>
>
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