[lxml-dev] Problem installing lxml-2.0beta1 onto production server

[Brad Clements]

I am installing lxml-2.0beta1 on python 2.3 on RHEL4.

I brought my libxml2 and libxslt up to date:

libxml2-2.6.30-1
libxslt-1.1.22-1


then easy-install -U lxml

During the install process, I got this:

easy_install-2.3 -U lxml
Searching for lxml
Reading http://pypi.python.org/simple/lxml/
Reading http://codespeak.net/lxml
Best match: lxml 2.0beta1
Downloading 
http://cheeseshop.python.org/packages/source/l/lxml/lxml-2.0beta1.tar.gz
Processing lxml-2.0beta1.tar.gz
Running lxml-2.0beta1/setup.py -q bdist_egg --dist-dir 
/tmp/easy_install-SE9_WX/lxml-2.0beta1/egg-dist-tmp-onxV0q
Building lxml version 2.0.beta1.
NOTE: Trying to build without Cython, pre-generated 'src/lxml/etree.c' 
needs to be available.
warning: no previously-included files found matching 'doc/pyrex.txt'
warning: no previously-included files found matching 'src/lxml/etree.pxi'

  File "build/bdist.linux-i686/egg/lxml/html/diff.py", line 323
    start.extend(tag for name, pos, tag in tag_stack)
                       ^
SyntaxError: invalid syntax
  File 
"/usr/local/lib/python2.3/site-packages/lxml-2.0beta1-py2.3-linux-i686.egg/lxml/html/diff.py", 
line 323
    start.extend(tag for name, pos, tag in tag_stack)
                       ^
SyntaxError: invalid syntax
Adding lxml 2.0beta1 to easy-install.pth file

Installed 
/usr/local/lib/python2.3/site-packages/lxml-2.0beta1-py2.3-linux-i686.egg
Processing dependencies for lxml
Finished processing dependencies for lxml


And when I try to run an application that uses lxml, I get this:

@400000004793fafb29d86124 Traceback (most recent call last):
@400000004793fafb29e1c764   File 
"/misc/home/bkc/src/Python/MurkWorks/Rating/RatingServer.py", line 13, in ?
@400000004793fafb29e2b994     from MurkWorks.Carriers.Rater import 
Rater, get_carrier_service_mapper
@400000004793fafb29ee36fc   File 
"/misc/home/bkc/src/Python/MurkWorks/Carriers/Rater.py", line 22, in ?
@400000004793fafb29eee2dc     import UPS, BAX, CCX, Estes, FedexFreight, 
FedexExpress, FedexGround, USPS, Yellow, Aaction, LandAir, 
FedexNational, CentralTransport
@400000004793fafb29f3d094   File 
"/misc/home/bkc/src/Python/MurkWorks/Carriers/CentralTransport.py", line 
14, in ?
@400000004793fafb29f4a76c     from lxml import etree
@400000004793fafb29f55734 ImportError: 
/usr/local/lib/python2.3/site-packages/lxml-2.0beta1-py2.3-linux-i686.egg/lxml/etree.so: 
undefined symbol: PyDict_Contains


On my development server I'm running alpha3, so I'm trying to to install 
that now:

 http://cheeseshop.python.org/packages/source/l/lxml/lxml-2.0alpha3.tar.gz

But that fails::

NOTE: Trying to build without Cython, pre-generated 'src/lxml/etree.c' 
needs to be available.
warning: no previously-included files found matching 'doc/pyrex.txt'
warning: no previously-included files found matching 'src/lxml/etree.pxi'
src/lxml/etree.c:73843: error: `METH_COEXIST' undeclared here (not in a 
function)
src/lxml/etree.c:73843: error: initializer element is not constant
src/lxml/etree.c:73843: error: (near initialization for 
`__pyx_methods_5etree_QName[0].ml_flags')
src/lxml/etree.c:73843: error: initializer element is not constant
src/lxml/etree.c:73843: error: (near initialization for 
`__pyx_methods_5etree_QName[0]')

same error with alpha4

Oops, and alpha5 is:

Building lxml version 2.0.alpha5.
NOTE: Trying to build without Cython, pre-generated 'src/lxml/etree.c' 
needs to be available.
warning: no previously-included files found matching 'doc/pyrex.txt'
warning: no previously-included files found matching 'src/lxml/etree.pxi'
  File "build/bdist.linux-i686/egg/lxml/html/diff.py", line 323
    start.extend(tag for name, pos, tag in tag_stack)
                       ^
SyntaxError: invalid syntax
  File 
"/usr/local/lib/python2.3/site-packages/lxml-2.0alpha5-py2.3-linux-i686.egg/lxml/html/diff.py", 
line 323
    start.extend(tag for name, pos, tag in tag_stack)
                       ^
SyntaxError: invalid syntax
Adding lxml 2.0alpha5 to easy-install.pth file

Installed 
/usr/local/lib/python2.3/site-packages/lxml-2.0alpha5-py2.3-linux-i686.egg
Processing dependencies for lxml==2.0alpha5
Finished processing dependencies for lxml==2.0alpha5


It looks like it's going to be a late night for me re-writing to not use 
lxml on the production server.




-- 
Brad Clements,                bkc at murkworks.com    (315)268-1000
http://www.murkworks.com                          
AOL-IM: BKClements