I try to install pytq5 with pip and get this error
$ python3 -m pip install PyQt5
Collecting PyQt5
Using cached PyQt5-5.15.6.tar.gz (3.2 MB)
Installing build dependencies ... done
Getting requirements to build wheel ... done
Preparing metadata (pyproject.toml) ... error
error: subprocess-exited-with-error
× Preparing metadata (pyproject.toml) did not run successfully.
│ exit code: 1
╰─> [29 lines of output]
Traceback (most recent call last):
File "/Users/olivierskonieczny/Desktop/app/python/ObjectDetection/envs/lib/python3.9/site-packages/pip/_vendor/pep517/in_process/_in_process.py", line 156, in prepare_metadata_for_build_wheel
hook = backend.prepare_metadata_for_build_wheel
AttributeError: module 'sipbuild.api' has no attribute 'prepare_metadata_for_build_wheel'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/Users/olivierskonieczny/Desktop/app/python/ObjectDetection/envs/lib/python3.9/site-packages/pip/_vendor/pep517/in_process/_in_process.py", line 363, in <module>
main()
...
...
...
[end of output]
note: This error originates from a subprocess, and is likely not a problem with pip.
error: metadata-generation-failed
× Encountered error while generating package metadata.
╰─> See above for output.
note: This is an issue with the package mentioned above, not pip.
hint: See above for details.
I still can install other packages like lxml but can't install pytq5. I'm installing everything in virtual environment.
I faced the same problem these days. When you have a look at PyPi download site, you can read in the Installation chapter that you need "Qt's qmake tool on PATH". After installing Qt's development files everything worked fine for me. So first install it and make sure it's on your PATH and than try again.
sudo apt-get install qtbase5-dev
pip install pyqt5
PS: I think it has nothing to do with your python or pip version. I tried many versions and had this problem every time. It's just missing, corrupted or not found header development files from qt5.
Regards, Vali
This error usually occurs due to an incompatibility between the versions of PyQt5 , sip , pip and/or the version of Python you are using in the virtual environment.
The key clue is this line:
AttributeError: module 'sipbuild.api' has no attribute 'prepare_metadata_for_build_wheel' This indicates that during compilation, PyQt5 is attempting to use an unsupported version of sip .
Within your virtual environment, run:
python --version
pip --versionand:
pip list | grep -E "pip|setuptools|wheel|sip"Often it can be solved with:
python -m pip install --upgrade pip setuptools wheelThen try again:
python -m pip install PyQt5If the problem persists:
python -m pip uninstall sip
python -m pip install --upgrade sipand then:
python -m pip install PyQt5If you are using Python 3.9, try:
python -m pip install PyQt5==5.15.11or simply:
python -m pip install --only-binary=:all: PyQt5This forces the use of a precompiled wheel instead of compiling from source code.
Check the architecture:
uname -mIf it returns:
arm64Make sure you have a recent version of pip:
python -m pip install --upgrade pipOlder versions of pip sometimes fail to find the correct wheels for PyQt5 and end up trying to compile it, which generates errors like the one you show.
Your question states:
pytq5But the correct package is:
pip install PyQt5(with Qt , not tq ).
If it still fails after this, share the output of:
python --version
pip --version
pip show sip
pip show PyQt5and the last 20–30 complete lines of the traceback to identify exactly which combination of versions is causing the conflict.
You need to have Qt5 installed in the system, and you need to have its qmake in PATH.
To install Qt5, you can either run brew install qt5 or download the installer from https://www.qt.io/download-qt-installer.
Note that if you choose to use the installer, it will require you to log in to or create a qt.io account to perform the installation.
If you have an older version of MacOS, you can download older installers from https://download.qt.io/archive/qt/. You can check which version supports your OS version in https://doc.qt.io/archives/qt-5.14/supported-platforms.html, where you can swap out qt-5.14 in the url for whichever version you are interested in.
After the installation, find where qmake is located. For me using the installer for 5.14.2 it was in /Users/Admin/Qt5.14.2/5.14.2/clang_64/bin. You need to add this to the PATH environment variable. To do so edit .bash_profile in your home folder (may need to press Command + Shift + . first to see dotfiles in Finder) and add to it something the following:
export PATH="$PATH:/Users/Admin/Qt5.14.2/5.14.2/clang_64/bin"
Now, upon launching a new terminal, you should be able to type qmake and see its help text be outputted. Installing PyQt5 should now succeed (provided the Qt5 version you installed supports your MacOS version).
Install and uninstall
If you are encountering an error while installing pyqt5 with pip, it is likely that there is a problem with the installation process. Some common reasons for this error include:
The pyqt5 package is not available on PyPI, the Python Package Index. This can happen if the package has been removed, or if it has never been uploaded to PyPI. In this case, you will need to install pyqt5 from a different source, such as the official PyQt5 website or a third-party package repository.
There is a problem with your pip installation. This can happen if pip is not installed correctly, or if it is outdated. In this case, you may need to upgrade pip or reinstall it to fix the problem.
There is a problem with your Python installation. This can happen if Python is not installed correctly, or if it is an older version that is not compatible with pyqt5. In this case, you may need to upgrade or reinstall Python to fix the problem.
If you continue to encounter problems while installing pyqt5, it is recommended that you seek assistance from the pyqt5 community or from a qualified Python developer. They will be able to provide further guidance and help you troubleshoot the issue.
I got the same error and fixed it by simply uninstalling 3.10 and installing 3.9. x2
This could be caused by an incompatibility in the version of PyQt5 that is being released and the version of Python that you have in your virtual environment.
Study
Sorry for the difficulty you are experiencing installing PyQt5 touch. There seems to be a problem with the generation of package metadata.
This could be caused by an incompatibility in the version of PyQt5 that is being released and the version of Python that you have in your virtual environment.
To resolve this issue, I would recommend you try the following:
Make sure you have the latest version of pip-almazación. You can run the following command in your terminal:
python3 -m pip install --upgrade pip
Try PyQt5 using the --no-cache-dir option for cache issues. Run the following command:
python3 -m pip install --no-cache-dir PyQt5
If that's the problem, you can try specifying a specific version of PyQt5 that is compatible with the version of Python you have in your virtual environment. For example, if you are using Python 3.9, you can install all PyQt5 version 5.15.4 following the command:
python3 -m pip install --no-cache-dir PyQt5==5.15.4
Hoping that these steps help you solve the problem and that PyQt5 can be installed successfully
I got that same error and I fixed it just by uninstalling 3.10 and installing 3.9.