I have installed lxml which was built using a standalone version of libxml2. Reason for this was that the lxml needed a later version of libxml2 than what was currently installed.
When I use the lxml module how do I tell it (python) where to find the correct version of the libxml2 shared library?
Assuming you're talking about a .so file, it's not up to Python to find it -- it's up to the operating system's dynamic library loaded. For Linux, for example, LD_LIBRARY_PATH is the environment variable you need to set.
Related
I am trying to install lxml for my project which is based on Python 3.12 for testing reasons. The problem is related to building the wheel for lxml.
I am still getting:
Could not find function xmlCheckVersion in library libxml2. Is libxml2 installed?
I am using Windows 11 and was trying different approaches:
Putlibxml2.dll in C:\Windows
Put libxml2.dll in C:\Windows\SysWOW64
Put libxml2.dll in another folder and add this folder to Path
Search the internet but the solutions I found are all related to Linux
I am trying to do some web scraping using python with PyCharm on a windows 10 machine. Some sites suggest using lxml library and it sounds good. I am trying to load the package but am having trouble. What should I do?
OK great. I go to add lxml 3.6.4 in the package installer and it fails with the message(s):
ERROR: b"'xslt-config' is not recognized as an internal or external command,\r\noperable program or batch file.\r\n"
and
Could not find function xmlCheckVersion in library libxml2. Is libxml2 installed?
I installed libxml2dom via the package installer but that does not do the trick
xslt-config is not one of the available packages in the available packages installer
libxml2 is also not an available package
I do not see "libxml2" from the options of available packages. But I do see "libxml2-python" 2.6.21
I tried to install it, but it fails with the message:
Collecting libxml2-python==2.6.21
Could not find a version that satisfies the requirement libxml2-python==2.6.21 (from versions: )
No matching distribution found for libxml2-python==2.6.21
I have been able to load other packages
Using python interpreter 3.5.2
Using PyCharm Community Edition 2016.2.3
lxml needs C/C++ libraries libxml, libxstl so you have to install it first. But they are not Python modules but standard libraries - probably libxml.dll, libxstl.dll.
lxml may need also source code for this libraries or C/C++ header files *.h and C/C++ compiler to compile lxml
For Windows exists Unofficial Windows Binaries for Python Extension Packages with precompiled modules and there is lxml
But much easier (for Windows user) is use Anaconda distribution which installs the same Python from Python.org but with extra, precompiled modules like lxml. See list of modules.
PyCharm can use different Python with different project so you can have installed current Python and Anaconda and use them both in PyCharm.
This question already has answers here:
Installing lxml, libxml2, libxslt on Windows 8.1
(4 answers)
Closed 6 years ago.
Actually Iam trying to installing lxml because of
UserWarning: No parser was explicitly specified, so I'm using the best available HTML parser for this system ("html.parser"). This usually isn't a problem, but if you run this code on another system, or in a different virtual environment, it may use a different parser and behave differently.
So Iam trying to use lxml.but I could not install due to this error
I tried to install manually by downloading the latest version also.But couldn't make it.Can any one please help me to sort this out
Probabily you didin't installed the requirements for lxml package. Follow this tutorial: http://lxml.de/installation.html
Pay extra attention to this excert:
Most MS Windows systems lack the necessarily tools to build software,
starting with a C compiler already. Microsoft leaves it to users to
install and configure them, which is usually not trivial and means
that distributors cannot rely on these dependencies being available on
a given system. In a way, you get what you've paid for and make others
pay for it.
Due to the additional lack of package management of this platform, it
is best to link the library dependencies statically if you decide to
build from sources, rather than using a binary installer. For that,
lxml can use the binary distribution of libxml2 and libxslt, which it
downloads automatically during the static build. It needs both libxml2
and libxslt, as well as iconv and zlib, which are available from the
same download site. Further build instructions are in the source build
documentation.
My Python application required lxml. When I tried installing lxml, it the a "vcvrsall.bat not found" error. After digging around on the interwebs, I found that I needed to install MinGW, add it to my PATH variable and modify the distutils.cfg to use this compiler. It worked to the point that it now tried to download the lxml sources and compile it but fails on an error that reads fatal error: libxml/xmlversion.h: No such file or directory. It seems that lxml in turn depends on the libxml C library. How can I install this C library into my MinGW environment so that I can continue building my lxml.
Thanks.
It seems that lxml in turn depends on the libxml C library.
lxml is a python wrapper for the libxml C library.
How can I install this C library into my MinGW environment so that I can continue building my lxml.
Try this tutorial: http://www.pokorra.de/coding/compile_libxml_mingw.html
For lxml, you have to include references to the libxml headers and also have to link against the binaries.
you can download Unofficial Windows Binaries at:
http://www.lfd.uci.edu/~gohlke/pythonlibs/
e.g. for python 2.7 32bit:
http://www.lfd.uci.edu/~gohlke/pythonlibs/3i67tivk/lxml-2.3.3.win32-py2.7.exe
There is lxml module installed on my system (debian package python-lxml, for python 2.6), also I'm using virtualenv based on python2.6, installed with flag --no-site-packages.
Is it possible to install lxml inside virtual environment without compilation using some standard tools (pip, easy_install etc) and already install lxml binary files from the base system?
P.S.
I can, of course, manually create symlinks/copy files but don't like this method.
You may create required symlinks automatically by bootstrap script.