We Keep Coding

Unable to install PyQt5 with pip

Im running into a problem installing PyQt5 with pip:
pip install pyqt5
DEPRECATION: Configuring installation scheme with distutils config files is deprecated and will no longer work in the near future. If you are using a Homebrew or Linuxbrew Python, please see discussion at https://github.com/Homebrew/homebrew-core/issues/76621
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: Command errored out with exit status 1:
command: /opt/homebrew/opt/python#3.9/bin/python3.9 /opt/homebrew/lib/python3.9/site-packages/pip/_vendor/pep517/in_process/_in_process.py prepare_metadata_for_build_wheel /var/folders/rv/nylh_sjx44b1bq2pmbn1lwkr0000gn/T/tmpi8zk3o59
cwd: /private/var/folders/rv/nylh_sjx44b1bq2pmbn1lwkr0000gn/T/pip-install-9w2kcz7l/pyqt5_a170d636f15d43c8bb4ae5d9a73574fc
Complete output (24 lines):
Querying qmake about your Qt installation...
/opt/homebrew/bin/qmake -query
Traceback (most recent call last):
File "/opt/homebrew/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 "/opt/homebrew/lib/python3.9/site-packages/pip/_vendor/pep517/in_process/_in_process.py", line 363, in <module>
main()
File "/opt/homebrew/lib/python3.9/site-packages/pip/_vendor/pep517/in_process/_in_process.py", line 345, in main
json_out['return_val'] = hook(**hook_input['kwargs'])
File "/opt/homebrew/lib/python3.9/site-packages/pip/_vendor/pep517/in_process/_in_process.py", line 160, in prepare_metadata_for_build_wheel
whl_basename = backend.build_wheel(metadata_directory, config_settings)
File "/private/var/folders/rv/nylh_sjx44b1bq2pmbn1lwkr0000gn/T/pip-build-env-fyh98wta/overlay/lib/python3.9/site-packages/sipbuild/api.py", line 51, in build_wheel
project = AbstractProject.bootstrap('pep517')
File "/private/var/folders/rv/nylh_sjx44b1bq2pmbn1lwkr0000gn/T/pip-build-env-fyh98wta/overlay/lib/python3.9/site-packages/sipbuild/abstract_project.py", line 83, in bootstrap
project.setup(pyproject, tool, tool_description)
File "/private/var/folders/rv/nylh_sjx44b1bq2pmbn1lwkr0000gn/T/pip-build-env-fyh98wta/overlay/lib/python3.9/site-packages/sipbuild/project.py", line 603, in setup
self.update(tool)
File "project.py", line 160, in update
sipbuild.exceptions.UserException
----------------------------------------
Im using macOS Monterey 12.0.1, with the Apple M1 chip.
What I've tried so far:
Installed PyQt5 using homebrew. Result: PyQt5 got installed via brew but without the necessary package PyQtWebengine. Means when I try to run my application, I receive the error message, that PyQtWebengine package/module is not installed which Im not able to install with pip. So I uninstalled it.
Installed sip and uninstalled
qt (6.2.2) and qt#5 (5.15.2) are installed with brew
Run cmd: python3 -m pip install PyQt5
Pip is up to date (21.3.1)
pip install with a specific PyQt5 Version
Any ideas to solve this problem?
Thanks in advance for any ideas/solutions!

The way I solved the same problem in my M1s was installing the library via terminal launched in Rosetta mode (left click on the Terminal icon -> Get Info -> Open in Rosetta).
So, detailed steps are:
Open a Terminal with Rosetta 2 via left click on the Terminal icon -> Get Info -> Open in Rosetta (https://dev.to/courier/tips-and-tricks-to-setup-your-apple-m1-for-development-547g)
Use non-homebrew python (mine was in /usr/bin/python3) to create virtual environment
$ /usr/bin/python3 -m venv venv
$ source venv/bin/activate
Upgrade pip
(venv)$ pip install --upgrade pip
Install PyQt5
(venv) $pip install PyQt5
Alternatively, you can do a one-off installation via this command:
$ arch -x86_64 python -m pip install PyQt5

I use macos 12.1 (m1), and I use mini-forge with homebrew, I have installed pyqt5 with conda install pyqt.
P.S. my python version is 3.9.

conda create -n py3.9.13 python=3.9.13
conda install pyqt
Worked for me. I'm using macOS Monterey 12.4, with the Apple M1 chip. Anaconda3 installed many dependences automatically while installing. After the above installation, my conda list:
# Name Version
bzip2 1.0.8
ca-certificates 2022.6.15
gettext 0.19.8.1
glib 2.70.2
glib-tools 2.70.2
gst-plugins-base 1.20.3
gstreamer 1.20.3
icu 70.1
jpeg 9e
krb5 1.19.3
libclang 14.0.6
libclang13 14.0.6
libcxx 14.0.6
libedit 3.1.20191231
libffi 3.4.2
libglib 2.70.2
libiconv 1.16
libllvm14 14.0.6
libogg 1.3.4
libopus 1.3.1
libpng 1.6.37
libpq 14.4
libvorbis 1.3.7
libzlib 1.2.12
lz4-c 1.9.3
mysql-common 8.0.29
mysql-libs 8.0.29
ncurses 6.3
nspr 4.32
nss 3.78
openssl 1.1.1p
packaging 21.3
pcre 8.45
pip 22.1.2
ply 3.11
pyparsing 3.0.9
pyqt 5.15.4
pyqt5-sip 12.9.0
python 3.9.13
python_abi 3.9
qt-main 5.15.4
readline 8.1.2
setuptools 62.6.0
sip 6.6.2
sqlite 3.39.0
tk 8.6.12
toml 0.10.2
tzdata 2022a
wheel 0.37.1
xz 5.2.5
zlib 1.2.12
zstd 1.5.2

As I answered here, Rosetta is not required if you're willing to use Homebrew's pyqt#5. Homebrew includes an arm64-compiled pyqt5, and one can leverage its installation in a venv using the --system-site-packages flag to venv:
$ # Install pyqt5 via homebrew
$ brew install pyqt#5
$ # Note that it's installed in python3.9, not 3.10
$ brew cat pyqt#5 | grep 'depends_on.*python'
depends_on "python#3.9"
$ # Make a python3.9 virtualenv with access to the system's site-packages
$ /opt/homebrew/bin/python3.9 -m venv --system-site-packages .venv
$ source .venv/bin/activate

Can't install Python 3.5 files for Zipline

I'm trying to install Zipline and all of its dependencies using conda for Python 3.5. However, I'm only getting the 2.7 versions of the files:
The following packages will be downloaded:
package | build
---------------------------|-----------------
logbook-0.12.5 | py27_0 111 KB quantopian
zipline-0.7.0 | np18py27_0 241 KB quantopian
ta-lib-0.4.8 | np18py27_0 6.3 MB quantopian
------------------------------------------------------------
Total: 6.7 MB
The following NEW packages will be INSTALLED:
asn1crypto: 0.24.0-py27_0
backports: 1.0-py27_1
backports.functools_lru_cache: 1.5-py27_1
backports_abc: 0.5-py27h6d9a788_0
ca-certificates: 2018.12.5-0
cffi: 1.11.5-py27hc64555f_1
chardet: 3.0.4-py27_1
cryptography: 2.4.2-py27hc64555f_0
cycler: 0.10.0-py27h0308610_0
dateutil: 2.4.1-py27_0
enum34: 1.1.6-py27_1
freetype: 2.9.1-h4d385ea_1
functools32: 3.2.3.2-py27_1
futures: 3.2.0-py27_0
icu: 58.2-hb13015a_1
idna: 2.8-py27_0
ipaddress: 1.0.22-py27_0
jpeg: 9b-hb117b5b_2
kiwisolver: 1.0.1-py27hc56fc5f_0
libpng: 1.6.36-h7a46e7a_0
logbook: 0.12.5-py27_0 quantopian
matplotlib: 2.2.3-py27h263d877_0
numpy: 1.8.2-py27_0
openssl: 1.0.2p-h0c8e037_0
pandas: 0.14.1-np18py27_0
pycparser: 2.19-py27_0
pyopenssl: 18.0.0-py27_0
pyparsing: 2.3.1-py27_0
pyqt: 5.6.0-py27hc56fc5f_6
pysocks: 1.6.8-py27_0
python-dateutil: 2.7.5-py27_0
pytz: 2018.9-py27_0
qt: 5.6.2-vc9he136c73_12
requests: 2.21.0-py27_0
scipy: 0.14.0-np18py27_0
singledispatch: 3.4.0.3-py27h18657b7_0
sip: 4.18.1-py27hc56fc5f_2
six: 1.12.0-py27_0
sqlite: 3.26.0-h0c8e037_0
ta-lib: 0.4.8-np18py27_0 quantopian
tornado: 5.1.1-py27h0c8e037_0
urllib3: 1.24.1-py27_0
vs2008_runtime: 9.00.30729.1-hfaea7d5_1
win_inet_pton: 1.0.1-py27_1
zipline: 0.7.0-np18py27_0 quantopian
zlib: 1.2.11-h3cc03e0_3
The following packages will be UPDATED:
certifi: 2018.8.24-py35_1 --> 2018.11.29-py27_0
pip: 10.0.1-py35_0 --> 18.1-py27_0
setuptools: 40.2.0-py35_0 --> 40.6.3-py27_0
wheel: 0.31.1-py35_0 --> 0.32.3-py27_0
wincertstore: 0.2-py35h3d52121_0 --> 0.2-py27h87a2792_0
The following packages will be DOWNGRADED:
python: 3.5.6-he025d50_0 --> 2.7.15-hcb6e200_5
vc: 14.1-h0510ff6_4 --> 9-h7299396_1
Proceed ([y]/n)? n
I can see that Python 3.5 files are available on Anaconda. How do I specify that I want the Python 3.5 files, not the 2.7 ones?
I ran the following commands from the Anaconda prompt:
conda create -n py35 python=3.5
conda activate py35
conda install -c Quantopian zipline

This happened to me as well. I quitted the zipline installation process and installed some other packages instead. Then I tried to install zipline again, and conda did not asked to downgrade python anymore. So I guess it is just some automatic environment solving mechanism with conda. You can try install zipline first, then upgrade python back to 3.5 again.

Why can't Anaconda find pdfminer for uninstall?

I installed the package pdfminer3k in an Anaconda environment (called "tractatus").
I can load it. Anaconda knows it's there.
$ python
Python 3.7.2 (default, Dec 29 2018, 00:00:04)
[Clang 4.0.1 (tags/RELEASE_401/final)] :: Anaconda, Inc. on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import pdfminer
>>>
(tractatus) ~/src/tractatus
$ conda list pdfminer
# packages in environment at /anaconda3/envs/tractatus:
#
# Name Version Build Channel
pdfminer3k 1.3.1 pypi_0 pypi
$ ll /anaconda3/envs/tractatus/lib/python3.7/site-packages/pdfminer3k-1.3.1-py3.7.egg/
total 0
drwxr-xr-x 9 wmcneill staff 288 Feb 4 14:12 EGG-INFO
drwxr-xr-x 26 wmcneill staff 832 Feb 4 14:12 pdfminer
Now I want to delete it, but Anaconda's remove command can't find the package.
$ conda remove pdfminer
Collecting package metadata: done
Solving environment: failed
PackagesNotFoundError: The following packages are missing from the target environment:
- pdfminer
(tractatus) ~/src/tractatus
$ conda remove pdfminer3k
Collecting package metadata: done
Solving environment: failed
PackagesNotFoundError: The following packages are missing from the target environment:
- pdfminer3k
pdfminer also does not appear in the installed packages list shown for this environment in the Anaconda Navigator UI.
Is this a bug in Anaconda, or am I doing something wrong?

Whats is your conda version ?
Do you have multiple environments ?
One possible workaround is try adding the following lines to .condarc file and restarting your system:
channels:
- conda-forge
- anaconda-fusion
- defaults
workaround's source:
https://github.com/conda/conda/issues/6633

I guess when you install pdfminer pkg, you are using 'pip install', so by the time you want to remove it, it can not be found at any of your conda env folder.
Instead of
conda remove pdfminer
try:
pip uninstall pdfminer
It works for me.

Can not install VTK with Anaconda

I can not install VTK by anaconda in Mac OS X. I use
conda install -c anaconda vtk=6.3.0
Python 2.7 but get the following error:
UnsatisfiableError: The following specifications were found to be in conflict: - python 3.6* - vtk 6.3.0* -> python 2.7* -> openssl 1.0.1* Use "conda info " to see the dependencies for each package.
But I've updated Python to 3.6, and the same error.

Conda Search
$ conda search vtk
Fetching package metadata ...........
vtk 5.10.1 py27_0 defaults
5.10.1 py27_1 defaults
6.3.0 py27_0 defaults
6.3.0 py27_1 defaults
Create the choicest env
$ conda create -n vtk python=2.7 vtk=6.3.0
Fetching package metadata ...........
Solving package specifications: .
Package plan for installation in environment /home/sidon/opt/anaconda3/envs/vtk:
The following NEW packages will be INSTALLED:
openssl: 1.0.2k-1
pip: 9.0.1-py27_1
python: 2.7.13-0
readline: 6.2-2
setuptools: 27.2.0-py27_0
sqlite: 3.13.0-0
tk: 8.5.18-0
vtk: 6.3.0-py27_1
wheel: 0.29.0-py27_0
zlib: 1.2.8-3
Proceed ([y]/n)? y
vtk-6.3.0-py27 100% |#############################################################################################| Time: 0:00:15 1.97 MB/s
#
# To activate this environment, use:
# > source activate vtk
#
# To deactivate this environment, use:
# > source deactivate vtk
#
Active the new env
$ source activate vtk
Test
$ python -c "import vtk; print vtk.vtkSphereSource()"
vtkSphereSource (0xcfdcc0)
Debug: Off
Modified Time: 39
Reference Count: 2
Registered Events: (none)
Executive: 0xae5e00
ErrorCode: Success
Information: 0xf6e210
AbortExecute: Off
Progress: 0
Progress Text: (None)
Theta Resolution: 8
Phi Resolution: 8
Theta Start: 0
Phi Start: 0
Theta End: 360
Phi End: 180
Radius: 0.5
Center: (0, 0, 0)
LatLong Tessellation: 0
Output Points Precision: 0

I would suggest installing directly from the wheel file. You can get the VTK wheel file from here (wheel file directory site). This site has pretty much every wheel file so it is your friend! just search for it and you will see a bunch of .whl VTK files.
just download the wheel file that matches your anaconda python root version (either 3.5, 3.6, 2.7 etc.) and either 32 or 64 bit (depending on your python version).
To install from a wheel file, open a terminal in the directory the wheel is in and type
pip install "your_wheel_file_name"
If you want to install it for a conda environment, just activate the environment first (activate "env_name") and then install from the wheel file.

Try this out for me:
conda create --name vtk_test python=2.7 vtk
This will create a new environment with VTK, Python and their dependencies inside.

pip not installing numba/llvmlite properly within conda environment

I create a new conda environment
user#machine:~/project$ conda create -n test-env -c numba python=3.5.2 llvmdev=3.8
Fetching package metadata ...........
Solving package specifications: .
Package plan for installation in environment /home/user/anaconda2/envs/test-env:
The following NEW packages will be INSTALLED:
llvmdev: 3.8.1-7 numba
openssl: 1.0.2k-0
pip: 9.0.1-py35_1
python: 3.5.2-0
readline: 6.2-2
setuptools: 27.2.0-py35_0
sqlite: 3.13.0-0
system: 5.8-2 numba
tk: 8.5.18-0
wheel: 0.29.0-py35_0
xz: 5.2.2-1
zlib: 1.2.8-3
Proceed ([y]/n)? y
#
# To activate this environment, use:
# > source activate test-env
#
# To deactivate this environment, use:
# > source deactivate test-env
#
and then activate it and attempt to use specifically pip (not conda) to install llvmlite and numba, which appears to succeed. (Note: I've tried also --no-cache-dir and it doesn't change anything.)
user#machine:~/project$ source activate test-env
(test-env) user#machine:~/project$ pip install llvmlite==0.15 numba==0.30.1
Collecting llvmlite==0.15
Collecting numba==0.30.1
Collecting numpy (from numba==0.30.1)
Using cached numpy-1.12.0-cp35-cp35m-manylinux1_x86_64.whl
Installing collected packages: llvmlite, numpy, numba
Successfully installed llvmlite-0.15.0 numba-0.30.1 numpy-1.12.0
But the library is not installed properly,
(test-env) user#machine:~/project$ python
Python 3.5.2 |Continuum Analytics, Inc.| (default, Jul 2 2016, 17:53:06)
[GCC 4.4.7 20120313 (Red Hat 4.4.7-1)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import numba
Traceback (most recent call last):
File "/home/user/anaconda2/envs/test-env/lib/python3.5/site-packages/llvmlite/binding/ffi.py", line 42, in <module>
lib = ctypes.CDLL(os.path.join(_lib_dir, _lib_name))
File "/home/user/anaconda2/envs/test-env/lib/python3.5/ctypes/__init__.py", line 347, in __init__
self._handle = _dlopen(self._name, mode)
OSError: /home/user/anaconda2/envs/test-env/lib/python3.5/site-packages/llvmlite/binding/libllvmlite.so: undefined symbol: _ZNKSt14error_category23default_error_conditionEi
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/home/user/anaconda2/envs/test-env/lib/python3.5/site-packages/numba/__init__.py", line 9, in <module>
from . import config, errors, runtests, types
File "/home/user/anaconda2/envs/test-env/lib/python3.5/site-packages/numba/config.py", line 11, in <module>
import llvmlite.binding as ll
File "/home/user/anaconda2/envs/test-env/lib/python3.5/site-packages/llvmlite/binding/__init__.py", line 6, in <module>
from .dylib import *
File "/home/user/anaconda2/envs/test-env/lib/python3.5/site-packages/llvmlite/binding/dylib.py", line 4, in <module>
from . import ffi
File "/home/user/anaconda2/envs/test-env/lib/python3.5/site-packages/llvmlite/binding/ffi.py", line 47, in <module>
lib = ctypes.CDLL(_lib_name)
File "/home/user/anaconda2/envs/test-env/lib/python3.5/ctypes/__init__.py", line 347, in __init__
self._handle = _dlopen(self._name, mode)
OSError: libllvmlite.so: cannot open shared object file: No such file or directory
Why does the conda installation of llvmdev from the numba channel fail to "just work".
In my use case, I'm coming to a project that has a pip-styled requirements.txt file, and I need to create conda environments from that file. Some project developers will use venv+pip, some will use conda, and some packages it contains are not found in any anaconda channels, so pip installation is mandatory. We don't want to maintain a separate envrionment.yaml in addition to the requirements.txt, so installing from requirements.txt inside of a conda envrionment is part of my constraints.
Everything seems OK, except for the pip installation of numba/llvmlite, which expects a system dependency of llvm 3.8+. I want to satisfy that as part of the conda environment though.
How can I ensure from a conda environment only that the right llvmdev exists for installing numba and llvmlite?

Installing llvmdev:
Installing llvmdev from the conda-forge channel can be achieved by adding conda-forge to your channels with:
conda config --add channels conda-forge
Once the conda-forge channel has been enabled, llvmdev can be installed with:
conda install llvmdev
It is possible to list all of the versions of llvmdev available on your platform with:
conda search llvmdev --channel conda-forge
HELP:I cloned the relevant files from their GitHub sources and did
python setup.py install
for more without conda use pip
sudo pip install -U llvmlite
sudo pip install -U numba

This is what worked for me using the Anaconda environment:
pip uninstall llvmlite
pip install -U --ignore-installed numba

In an ideal scenario, the required shared library should be present after the installation of llvmlite.
(test-env) ~/condaexpts$ conda create -n test-env -c numba python=3.5.2 llvmdev=3.8
(test-env) ~/condaexpts$ source activate test-env
(test-env) ~/condaexpts$ pip install numpy==1.12.0 llvmlite==0.15 numba==0.30.1
(test-env) ~/condaexpts$ find $CONDA_PREFIX | grep libllvmlite
/home/ubuntu/condaexpts/m3/envs/test-env/lib/python3.5/site-packages/llvmlite/binding/libllvmlite.so
If this file is not present in the test-env, then something went wrong while installing llvmlite.
Also, think about this approach the other way round. You don't need to have a requirements file separate from conda environment file. You can have both dependencies in the conda environment file itself:
(test-env) ~/condaexpts$ conda env export
name: test-env
channels:
- !!python/unicode
'numba'
- !!python/unicode
'defaults'
dependencies:
- !!python/unicode
'openssl=1.0.2k=0'
- !!python/unicode
'pip=9.0.1=py35_1'
- !!python/unicode
'python=3.5.2=0'
- !!python/unicode
'readline=6.2=2'
- !!python/unicode
'setuptools=27.2.0=py35_0'
- !!python/unicode
'sqlite=3.13.0=0'
- !!python/unicode
'tk=8.5.18=0'
- !!python/unicode
'wheel=0.29.0=py35_0'
- !!python/unicode
'xz=5.2.2=1'
- !!python/unicode
'zlib=1.2.8=3'
- !!python/unicode
'llvmdev=3.8.1=7'
- !!python/unicode
'system=5.8=2'
- pip:
- llvmlite==0.15.0
- numba==0.30.1
- numpy==1.12.0
prefix: !!python/unicode '/home/ubuntu/condaexpts/m3/envs/test-env'
On second note, you can install the pre-built binaries required from the 'numba' conda channel itself. With:
(root) ~/condaexpts$ ./Miniconda3-latest-Linux-x86_64.sh -b -p m3
(root) ~/condaexpts$ source ./m3/bin/activate
(root) ~/condaexpts$ conda create -n test-env -c numba python=3.5.2 llvmdev=3.8 numba=0.30.1 llvmlite=0.15.0
(root) ~/condaexpts$ source activate test-env
(test-env) ~/condaexpts$ python
Python 3.5.2 |Continuum Analytics, Inc.| (default, Jul 2 2016, 17:53:06)
[GCC 4.4.7 20120313 (Red Hat 4.4.7-1)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import numba
>>> numba.__version__
'0.30.1'