I'm getting an error Could not find function xmlCheckVersion in library libxml2. Is libxml2 installed? when trying to install lxml through pip.
c:\users\f\appdata\local\temp\xmlXPathInitqjzysz.c(1) : fatal error C1083: Cannot open include file: 'libxml/xpath.h': No such file or directory
*********************************************************************************
Could not find function xmlCheckVersion in library libxml2. Is libxml2 installed?
*********************************************************************************
error: command 'C:\\Users\\f\\AppData\\Local\\Programs\\Common\\Microsoft\\Visual C++ for Python\\9.0\\VC\\Bin\\cl.exe' failed with exit status 2
I don't find any libxml2 dev packages to install via pip.
Using Python 2.7 and Python 3.x on x86 in a virtualenv under Windows 10.
Install lxml from http://www.lfd.uci.edu/~gohlke/pythonlibs/#lxml for your python version. It's a precompiled WHL with required modules/dependencies.
The site lists several packages, when e.g. using Win32 Python 3.11, use lxml‑4.9.0‑cp311‑cp311‑win32.whl.
Download the file, and then install with:
pip install C:\path\to\downloaded\file\lxml‑4.9.0‑cp311‑cp311‑win32.whl
I had this issue and realised that whilst I did have libxml2 installed, I didn't have the necessary development libraries required by the python package. Installing them solved the problem:
sudo apt-get install libxml2-dev libxslt1-dev
sudo pip install lxml
Try to use:
easy_install lxml
That works for me, win10, python 2.7.
On Mac OS X El Capitan I had to run these two commands to fix this error:
xcode-select --install
pip install lxml
Which ended up installing lxml-3.5.0
When you run the xcode-select command you may have to sign a EULA (so have an X-Term handy for the UI if you're doing this on a headless machine).
In case anyone else has the same issue as this on
Centos, try:
yum install python-lxml
Ubuntu
sudo apt-get install -y python-lxml
worked for me.
set STATICBUILD=true && pip install lxml
run this command instead, must have VS C++ compiler installed first
https://blogs.msdn.microsoft.com/pythonengineering/2016/04/11/unable-to-find-vcvarsall-bat/
It works for me with Python 3.5.2 and Windows 7
I tried install a lib that depends lxml and nothing works. I see a message when build was started: "Building without Cython", so after install cython with apt-get install cython, lxml was installed.
I had this issue and realized that while I did have libxml2 installed, I didn't have the necessary development libraries required by the python package.
1) Installing them solved the problem:
The site to download the file: Download
2) After Installing the file save it in a accessible folder
pip install *path to that file*
For some reason it doesn't work in python 3.11, but 3.10 works.
On windows, to install a module with a previous version, use
py -3.10 -m pip install lxml
if you want to install it in a venv, then use
py -3.10 -m venv .venv
.venv/Scripts/pip.exe install lxml
if you've set up the venv, then you can just use
pip install lxml
You also need to run the python program with that version. If you set up a venv, then you don't need to do this.
py -3.10 file.py
It is not strange for me that none of the solutions above came up, but I saw how the igd installation removed the new version and installed the old one, for the solution I downloaded this archive:https://pypi.org/project/igd/#files
and changed the recommended version of the new version: 'lxml==4.3.0' in setup.py
It works!
I got the same error for python 32 bit. After install 64bit, the problem was fixed.
I am using venv.
In my case it was enough to add lxml==4.6.3 to requirements.txt.
One library wanted earlier version and this was causing this error, so when I forced pip to use newest version (currently 4.6.3) installation was successful.
I would like to install scipy-0.15.1-cp33-none-win_amd64.whl that I have saved to the local drive. I am using:
pip 6.0.8 from C:\Python27\Lib\site-packages
python 2.7.9 (default, Dec 10 2014, 12:28:03) [MSC v.1500 64 bit (AMD64)]
When I run:
pip install scipy-0.15.1-cp33-none-win_amd64.whl
I get the following error:
scipy-0.15.1-cp33-none-win_amd64.whl is not a supported wheel on this platform
What is the problem?
cp33 means CPython 3.3.
You need scipy‑0.15.1‑cp27‑none‑win_amd64.whl instead.
This can also be caused by using an out-of-date pip with a recent wheel file.
I was very confused, because I was installing numpy-1.10.4+mkl-cp27-cp27m-win_amd64.whl (from here), and it is definitely the correct version for my Python installation (Windows 64-bit Python 2.7.11). I got the "not supported wheel on this platform" error.
Upgrading pip with python -m pip install --upgrade pip solved it.
I had the same problem while installing scipy-0.17.0-cp35-none-win_amd64.whl and my Python version was 3.5. It returned the same error message:
scipy-0.17.0-cp35-none-win_amd64.whl is not a supported wheel on this platform.
I realized that amd64 is not about my Windows, but about the Python version. Actually I am using a 32-bit Python on a 64-bit Windows. Installing the following file solved the issue:
scipy-0.17.0-cp35-none-win32.whl
Change the filename to scipy-0.15.1-cp33-none-any.whl and then run this command:
pip install scipy-0.15.1-cp33-none-any.whl
It should work :-)
I come across this problem because of a wrong name of my package (scipy-0.17.0-cp27-none-win_amd64 (1)).
After I deleted the '(1)' and changed the package to
scipy-0.17.0-cp27-none-win_amd64, the problem got resolved.
If you are totally new to Python, read step by step or go directly to 5th step directly.
Follow the below method to install SciPy 0.18.1 on Windows 64-bit, Python 64-bit.
Be careful with the versions of
Python
Windows
.whl version of NumPy and SciPy files
First install NumPy and then SciPy.
pip install FileName.whl
For NumPy: http://www.lfd.uci.edu/~gohlke/pythonlibs/#numpy
For SciPy: http://www.lfd.uci.edu/~gohlke/pythonlibs/#scipy
Be aware of the file name (what I mean is check the "cp" number).
Example: scipy-0.18.1-cp35-cp35m-win_amd64.whl
To check which "cp" number is supported by your pip. Go to point number 2 below.
If you are using .whl file, the following errors are likely to occur.
You are using pip version 7.1.0, however version 8.1.2 is available.
You should consider upgrading via the 'python -m pip install --upgrade pip' command
scipy-0.15.1-cp33-none-win_amd64.whl.whl is not supported wheel on this platform
For the above error: start Python (in my case 3.5), and type:
import pip print(pip.pep425tags.get_supported())
Output:
[('cp35', 'cp35m', 'win_amd64'), ('cp35', 'none', 'win_amd64'), ('py3', 'none', 'win_amd64'), ('cp35', 'none', 'any'), ('cp3', 'none', 'any'), ('py35', 'none', 'any'), ('py3', 'none', 'any'), ('py34', 'none', 'any'), ('py33', 'none', 'any'), ('py32', 'none', 'any'), ('py31', 'none', 'any'), ('py30', 'none', 'any')]
In the output you will observe "cp35" is there, so download "cp35" for NumPy as well as SciPy.
Please do notice that all platform requirements *are taken from the name of the .whl file!
So be very careful with renaming of *.whl package. I occasionally renamed my newly compiled TensorFlow package from
tensorflow-1.11.0-cp36-cp36m-linux_x86_64.whl
to
tensorflow-1.11.0-cp36-cp36m-linux_x86_64_gpu.whl
just to remind myself about GPU support and struggled with
tensorflow-1.11.0-cp36-cp36m-linux_x86_64_gpu.whl is not a supported
wheel on this platform.
error for about half an hour.
First of all, cp33 means that it is to be used when you have Python 3.3 running on your system. So if you have Python 2.7 on your system, try installing the cp27 version.
Installing scipy-0.18.1-cp27-cp27m-win_amd64.whl, needs a Python 2.7 running and a 64-bit system.
If you are still getting an error saying "scipy-0.18.1-cp27-cp27m-win_amd64.whl is not a supported wheel on this platform", then go for the win32 version.
By this I mean install scipy-0.18.1-cp27-cp27m-win32.whl instead of the first one.
This is because you might be running a 32-bit python on a 64-bit system.
The last step successfully installed scipy for me.
cpXX indicates the Python version.
Whichever Python X.X version you have installed into your system, download that particular cpxx file.
For example, if you have installed Python version 3.7 then
install
packagename-packageversion-cp37-cp37m-osx_10_13_x86_64.whl
Things to check:
You are downloading proper version like cp27 (means for Python 2.7) cp36 (means for Python 3.6).
Check of which architecture (32 bit or 64 bit) your Python is (you can do it so by opening Python IDLE and typing).
import platform
platform.architecture()
Now download the file of that bit, irrespective of your system architecture.
Check whether you're using the correct filename (i.e., it should not be appended with (1) which might happen if you download the file twice)
Check if your pip is updated or not. If not, you can use:
python -m pip install -upgrade pip
For my case, with a dlib installation into my Python installation (Python 3.6.9), I have found that changing the WHL file name from dlib-19.8.1-cp36-cp36m-win_amd64.whl to dlib-19.8.1-cp36-none-any.whl works for me.
Here is the way I run pip install to install dlib:
pip3 install dlib-19.8.1-cp36-none-any.whl
However, I still wonder whether there are any alternatives to installation of a WHL file by the pip command without changing the name.
I tried to install scikit-image, but I got the following error when I tried to install the .whl file, even though my installed version of Python was 2.7 32-bit:
scikit_image-0.12.3-cp27-cp27m-win32.whl is not a supported wheel on this platform.
However, I also got this message before the error message:
You are using pip version 7.1.0, however version 8.1.2 is available.
You should consider upgrading via the 'python -m pip install --upgrade pip' command.
I then ran the command python -m pip install --upgrade pip and then pip install scikit_image-0.12.3-cp27-cp27m-win32.whl worked fine.
I'm deploying Flask using Python 3.4 on IIS.
The following steps worked for me:
Upgrade pip
Install the wheel file for NumPy
pip install pandas
It's better to check the version of Python where you want to install your package.
If the wheel was built for Python 3 and your Python version is Python 2.x you may get this error.
While installing using pip, follow this convention:
python2 -m pip install XXXXXX.whl # If the .whl file is for Python 2
python3 -m pip install XXXXXX.whl # If the .whl file is for Python 3
I had a similar problem, installing a 64-bit version for Python 2.7 on Windows 7 64-bit. Everything was up-to-date, yet I got the message:
scipy-0.18.1-cp27-cp27m-win_amd64.whl is not supported wheel on this platform
Then I downloaded a 32-bit .whl file and it worked.
pip install scipy-0.18.1-cp27-cp27m-win32.whl
I suspect that the problem was probably that I didn’t have an AMD processor, rather an Intel one, and the SciPy 64-bit version says amd64 at the end.
This error might happen because of the difference between armv7 and armv6. If you download the package for armv7 and try to install for armv6, this error occurs.
For me I had similar issue. In my case, I didn't notice the python version was different (32bit vs 64bit) between the computers.
By the way, you can still do it, but you will need to manually replace all the whls files that are not recognized.
for example, for cryptography-36.0.1, from
https://pypi.org/project/cryptography/36.0.1/#files
use:
cryptography-36.0.1-cp36-abi3-win32.whl (32bit)
vs
cryptography-36.0.1-cp36-abi3-win_amd64.whl (64bit)
In addition, for some reason there were version differences between what was in the requirements.txt file, versus the whl files version in the folder.
For example, I had numpy 1.22.3 in requirements file, and numpy-1.22.2-cp39-cp39-win32.whl in the folder.
So make sure they match, and adjust the requirements file accordingly
Try Conda for installation. It seems to resolve versions
on the fly:
conda install scikit-learn
Simply, if you have more than one Python installation on your system, for example, 2.7/3.4/3.5, it's necessary you check your installation path. :)
During TensorFlow configuration I specified Python 3.6. But default, Python on my system is Python 2.7. Thus pip in my case means pip for 2.7. For me
pip3 install /tmp/tensorflow_pkg/NAME.whl
did the trick.
In my case (Windows 64-bit, Python 2.7, and Cygwin) the issue was with a missing gcc.
Using apt-cyg install gcc-core enabled me to then use pip2 wheel ... to install my wheels automatically.
I am using Python 2.7 and a Windows 64-bit system. I was getting the same error for lxml-3.8.0-cp27-cp27m-win_amd64.whl while doing pip install lxml-3.8.0-cp27-cp27m-win_amd64.whl.
Run pip install lxml and it auto-detected and successfully installed the Win32 version (though my system is Windows-64 bit)
cd C:\Python27
pip install lxml
Collecting lxml
Downloading lxml-3.8.0-cp27-cp27m-win32.whl (2.9MB)
100% |################################| 2.9MB 20kB/s
Installing collected packages: lxml
Successfully installed lxml-3.8.0
So, I will go with #1man's answer.
In my case, it had to do with not having installed the GDAL core previously. For a guide on how to install the GDAL and Basemap libraries go to GISPython
I tried a bunch of the stuff in previous answers to no avail.
Previously, I upgraded to pip 18.1, but I kept getting the following error when trying (for pyFltk):
>>from fltk import *
ImportError: DLL load failed %1 is not a valid Win32 Application
I was getting all sorts of errors about the *.whl file not being supported by my machine or something about being unable to remove the correct files from distutils.
I went back to my notes and they indicated that the whl file:
pyFltk-1.3.3.1-cp36-cp36m-win_amd64.whl but I kept getting the error above sooo...
it required pip 9.0.3 to install.
I downgraded my version of pip to 9.0.3:
pip install pip=9.0.3
And the .whl file installed properly.
This is also related to: here
I was trying to verify the installation of TensorFlow as specified here on a newly created virtual environment on Python 3.6. On running:
pip3 install --ignore-installed --upgrade "/Users/Salman/Downloads/tensorflow-1.12.0-cp37-cp37m-macosx_10_13_x86_64.whl"
I get the error and/or warning:
tensorflow-1.12.0-cp37-cp37m-macosx_10_13_x86_64.whl is not a supported wheel on this platform.
Since I had previously upgraded from pip to pip3, I simply replaced pip with pip3 as in:
pip3 install --ignore-installed --upgrade "/Users/Salman/Downloads/tensorflow-1.12.0-cp37-cp37m-macosx_10_13_x86_64.whl"
and it worked like a charm!
I had the same problem
I downloaded the latest pip from https://pypi.org/project/pip/#files
And then....
pip install << downloaded file location >>
And then the Pygame and Kivy installation worked...
For me, it worked when I selected the correct bit of my Python version, not the one of my computer version.
Mine is 32 bit, and my computer is 64 bit. That was the problem and the 32 bit version of fixed it.
To be exact, here is the one that I downloaded and worked for me:
mysqlclient-1.3.13-cp37-cp37m-win32.whl
Once again, just make sure to chose your Python version of bits and not your system one.
All right, the problem is easy. TensorFlow requires Python 3.4 - 3.7 and 64 bit. I see then you're using Python 2.7.
Read the TensorFlow install instructions on Install TensorFlow with pip.