Develop Reference

Could not find a version that satisfies the requirement PyQt4 (from versions: )

When trying to install qt4 for python 2.7 (that I need to run some scripts written by other developers):
$ sudo pip install PyQt4
Could not find a version that satisfies the requirement PyQt4 (from versions: )
No matching distribution found for PyQt4
Additional information:
$ python --version
Python 2.7.15+
$ pip list
Package Version
---------- -------
numpy 1.16.5
pip 19.3
pyqtgraph 0.10.0
setuptools 41.4.0
wheel 0.33.6
Any suggestion on how to install it?
Please note that I have tried the solution proposed here:
pip install PyQt4-4.11.4-cp35-none-win_amd64.whl
ERROR: PyQt4-4.11.4-cp35-none-win_amd64.whl is not a supported wheel on this platform.
I guess because it is not a windows platform, isn't it? I am trying to install it on XUbuntu 18.04.
As suggested in one of the comment by #phd "PyQt4-4.11.4-cp35-none-win_amd64.whl is for Python 3.5 and Python 64-bit. You need to download wheel for Python 2.7".
I have tryed also:
$ pip install PyQt4‑4.11.4‑cp27‑cp27m‑win_amd64.whl
Requirement 'PyQt4‑4.11.4‑cp27‑cp27m‑win_amd64.whl' looks like a filename, but the file does not exist
PyQt4‑4.11.4‑cp27‑cp27m‑win_amd64.whl is not a valid wheel filename.
So the question can be: how to install the right version? How to find the right packet? My problem is exactly this one: I do not know how to move myself in this big forest. Thank you for every suggestion.

Building on sinoroc's answer: PyQt4 is outdated, and only PyQt6 or PyQt5 are available on PIP. See this website.
pip install PyQt6

By default pip looks for project distributions on Pypi. If you ask for pip install PyQt4, then you can also manually look at the page for this PyQt4 project on PyPi. There you will eventually see that there are no distributions at all to download so pip won't be able to install anything on any platform for any Python version at all. You need to look for alternatives.
You can have a look at the homepage of the PyQt project and you will eventually find the page to download the PyQt4 source code. There is a link on this page for the Linux source code of PyQt4, so you might want to have a look at it and see if you can get it installed on your system.

Cannot install pyqt5-tools - 'Could not find a version that satisfies the requirement pyqt5-tools'

I try to install pyqt5-tools like this:
pip install pyqt5-tools
and the resulting out put is:
ERROR: Could not find a version that satisfies the requirement pyqt5-tools (from versions: none)
ERROR: No matching distribution found for pyqt5-tools
I need to download pyqt5-tools because I am trying to learn how to make GUIs with PyQt (I am a beginner programmer).
I have tried downloading different packages but anything related to PyQt has failed... It happens on both my Mac and Ubuntu machine.
I have checked that the packages are available on PyPI and literally copy-pasted the install command from the website into the terminal to make sure that I did not do it wrong.

Assuming you are installing that for qtdesigner. You can install it by package manager. I've installed it on my Debian machine
sudo apt install pyqt5-dev-tools pyqt5-dev
And you can find QtDesigner in
/usr/lib/x86_64-linux-gnu/qt5/bin/designer

If you are on windows use pip install PyQt5Designer instead.

You can download pyside2 it includes almost everything in pyqt5-tools; pyqt5, pyuic5 and the qdesigner
pip install PySide2

pyqt5-tools is only available for Windows as seen on their site: https://pypi.org/project/pyqt5-tools/
Try an alternative such as QT-creator for Mac: https://www.qt.io/download
This post strongly supports using Homebrew: Python PyQt on macOS Sierra

At first, if you are using python v3.10, probably, it won't work well.
when I have this error I uninstall python.
then install the python v3.9. it works better as it is older than v3.10

Best Solution I found
If you try to download pyqt5-tools it's not going to work with python v.3.10.x. But if you want to download it correctly you should try this solution because it works for me.
Install PyQt5:
pip install pyqt5
Install PyQt5Designer:
pip install PyQt5Designer
Then you should Find the Qt Designer, under the name designer.exe:
C:\...\Python\Python310\Lib\site-packages\QtDesigner\designer.exe
Note that the installation path of python may be different for you, to find yours, try this on your Python interpreter, type the following commands:
>>> import os, sys
>>> os.path.dirname(sys.executable)
'C:\\path-to-your-python-installation\\Python\\Python310'
Then you should find the QtDesigner after that path in for of:
C:\...\Python310\Lib\site-packages\QtDesigner\designer.exe
Just click on it, and pin it to your start or taskbar.
Or Simply if you want to download it directly as .exe, But I'm not sure if this can miss some pyqt5-tools:
Qt Designer Download

Go to Your python installation folder and find this followings:
Go here
Lib\site-packages\qt5_applications\Qt\bin
and you will find your qt designer

you should change your version from the newest version to a slightly old one, for example, 3.10 to 3.8 .
it is a normal thing when a new version is released, keep in mind that you have to update pip (using: python -m pip install --upgrade pip )

Installing spyder python on windows 8

I would like to install spyder (the math IDE for python, here 2.7) on my windows 8.1 machine.
I did install python starting from http://www.python.org/download/releases/2.7.6/;
I did install pip after having installed setuptools, following http://www.pip-installer.org/en/latest/installing.html for these installations;
I did change my path to add C:\Python27 and C:\Python27\Scripts to it, digging into the advanced parameters of my PC's properties. (By the way, I can't beleive the way you do this on windows has not changed for ages, with such a small input where you forgot to go at the end of the value when adding your path...)
I did install spyder
pip install spyder
But when launching it in command line (it's in the path :-) ), I ran through this error:
RuntimeError: Please check Spyder installation requirements:
PyQt4 4.4+ (or PySide 1.1.1+) is required.
Which is truly true. Though,
when trying to pip PyQt4 :
No distributions at all found for PyQt4
when trying to pip PySide, I have many errors, the root one seeming that it is unable to find nmake
Any piece of advice ?

To install PySide on Windows you can choose from the following options:
Download and install the packages from the releases page.
Use setuptools to install the egg binary packages:
c:> c:\Python27\Scripts\easy_install PySide
Use pip to install the wheel binary packages:
c:> c:\Python27\Scripts\pip install --use-wheel PySide
Details are here https://pypi.python.org/pypi/PySide#installing-pyside-on-a-windows-system
BTW: PyQt does not support setuptools or pip

I am not sure if its a proper answer, but you might want to take a look at PythonXY. It makes all these installation procedure a breeze.

From the details in your question, it looks like you are missing both PyQt4 and Qt itself.
There are binary installers for Windows available from the PyQt download page. These installers include both PyQt and Qt (as well as various other tools such as Qt Designer). The only things not included are the Qt documentation, and Python itself (which you seem to have already installed).
Just be careful to select the right installer from the list of Binary Packages: i.e. the one for Python-2.7, plus whatever architecture is appropriate for your system.

How to install PyQt5 on Windows?

When I try installing the PyQt5 on Windows using the command
python configure.py
I get this error:
Error: Make sure you have a working Qt qmake on your PATH.
I got the pyQt5 from PyQt5 Download.
How can I install PyQt5?
Update:
I installed Qt 5.0.2 for Windows 64-bit (VS 2012, 500 MB) from the Qt Download page and now I have this error:
Querying qmake about your Qt installation...
Determining the details of your Qt installation...
Error: Failed to determine the detail of your Qt installation. Try again using
the --verbose flag to see more detail about the problem.
And when I execute the command python configure.py --verbose:
Querying qmake about your Qt installation...
Determining the details of your Qt installation...
C:\Qt\Qt5.0.2\5.0.2\msvc2012_64\bin\qmake.exe -spec win32-msvc2008 -o qtdetail.m
k qtdetail.pro
nmake -f qtdetail.mk release
'nmake' não é reconhecido como um comando interno
ou externo, um programa operável ou um arquivo em lotes.
Error: Failed to determine the detail of your Qt installation. Try again using
the --verbose flag to see more detail about the problem.
I added C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\bin (contains nmake.exe) to PATH and I got this error:
Querying qmake about your Qt installation...
Determining the details of your Qt installation...
C:\Qt\Qt5.0.2\5.0.2\msvc2012_64\bin\qmake.exe -spec win32-msvc2008 -o qtdetail.mk qtdetail.pro
nmake -f qtdetail.mk release
Microsoft (R) Program Maintenance Utility Version 11.00.50727.1
Copyright (C) Microsoft Corporation. All rights reserved.
"C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\bin\nmake.exe" -f qtdetail.mk.Release
Microsoft (R) Program Maintenance Utility Version 11.00.50727.1
Copyright (C) Microsoft Corporation. All rights reserved.
cl -c -nologo -Zm200 -Zc:wchar_t -O2 -MD -GR -W3 -w34100 -w34189 -EHsc -DUNICODE -DWIN32 -DQT_NO_DEBUG -DQT_CORE_LIB -I"..\..\..\..\..\..\..\Qt\Qt5.0.2\5.0.2\msvc2012_64\include" -I"..\..\..\..\..\..\..\Qt\Qt5.0.2\5.0.2\msvc2012_64\include\QtCore" -I"release" -I"..\..\..\..\..\..\..\Qt\Qt5.0.2\5.0.2\msvc2012_64\mkspecs\win32-msvc2008" -Forelease\ #C:\Users\Victor\AppData\Local\Temp\nm68EA.tmp
NMAKE : fatal error U1077: '"C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\bin\cl.EXE"' : return code '0xc0000135'
Stop.
NMAKE : fatal error U1077: '"C:\Program Files (x86)\Microsoft Visual Studio 11.0\VC\bin\nmake.exe"' : return code '0x2'
Stop.

Mainly I use the following command under the cmd
pip install pyqt5
And it works with no problem!

The easiest way to install PyQt is to just use the installer (Link in your answer, step #5). If you install python 3.3, the installer will add all of the PyQt5 extras to that python installation automatically. You won't need to do any compiling (none of: nmake, nmake install, python configure).
All of the build options are available for if you need a custom install (for instance, using a different version of python, where there isn't an installer provided by riverbank computing).
If you do need to compile your own version of PyQt5, the steps (as you have found) are here, but assume you have python and a compiler installed and in your path. The installed and in your path have been where you have been running into trouble it seems. I'd recommend using the installer version, but you need to install python 3.3 first.

First try this in your Windows cmd window:
pip3 install pyqt5
If that is successful, it will look something like this:
C:\Windows\System32>pip3 install pyqt5
Collecting pyqt5
Downloading PyQt5-5.9-5.9.1-cp35.cp36.cp37-none-win_amd64.whl (77.2MB)
100% |################################| 77.2MB 13kB/s
Collecting sip<4.20,>=4.19.3 (from pyqt5)
Downloading sip-4.19.3-cp35-none-win_amd64.whl (49kB)
100% |################################| 51kB 984kB/s
Installing collected packages: sip, pyqt5
Successfully installed pyqt5-5.9 sip-4.19.3
If that did not work, you might try this link from SourceForge.
PyQt5 .exe installers for Windows
How to find the installer that's right for you?
First, determine what version of Python you have and whether you have 32-bit or 64-bit Python.
Next, open one of the directories. I'm on Python 3.5 64-bit so I'm looking for a .exe with those specs. When you open a directory on SourceForge, you will see some directories with ONLY .zip or .tar.gz. That's not what you're looking for. A good indication of which directory you should click is given by the "Downloads/Week" column.
I'll open the PyQt-5.6 directory in my case.
Here we notice some .exe files:
PyQt-5.6
|_PyQt5-5.6-gpl-Py3.5-Qt5.6.0-x32-2.exe
|_PyQt5-5.6-gpl-Py3.5-Qt5.6.0-x64-2.exe
|_PyQt5_gpl-5.6.zip
|_PyQt5_gpl-5.6.tar.gz
I know these are Python 3.5 by Py3.5 in the file name. I am also looking for the 64-bit version so I'll download PyQt5-5.6-gpl-Py3.5-Qt5.6.0-x64-2.exe. Final answer!
Note: if you try to install a version that's not compatible with your system, a dialog box will appear immediately after running the .exe. That's an indication that you've chosen the wrong one. I'm not trying to sound like a dbag... I did that several times!
To test a successful install, in your Python interpreter, try to import:
from PyQt5 import QtCore, QtGui, QtWidgets

I found a partial solution...
Steps to install pyQt5 (with VS 2012) on Windows:
1) Install the binary file Qt 5.0.2 for Windows 64-bit (VS 2012, 500 MB) from here.
2) Get sip-4.14.7 (development snapshot) from here.
3) Extract the file and open the Developer Command Prompt for VS2012.
4) Execute these commands (in sip folder):
python configure.py
nmake
nmake install
5) Get the pyQt5 from here.
6) Extract the file and open the VS2012 x64 Native Tools Command Prompt.
7) Execute these commands:
python configure.py
UPDATE: When execute these commands below is not working:
nmake
nmake install
Solution: I will try use pyQt4 with Qt5... because pyQt5 is in development and doesn't have support/documentation yet.

I'm new to both Python and PyQt5. I tried to use pip, but I was having problems with it using a Windows machine. If you have a version of Python 3.4 or above, pip is installed and ready to use like so:
python -m pip install pyqt5
That's of course assuming that the path for Python executable is in your PATH environment variable. Otherwise include the full path to Python executable (you can type where python to the Command Window to find it) like:
C:\users\userName\AppData\Local\Programs\Python\Python34\python.exe -m pip install pyqt5

One of the most (probably the most) easiest way to install site-packages like PyQt5 is installing one of the versions of Anaconda. You can just install many of site-packages by installing it. List of avaliable site-packages with Anaconda versions can be checked here.
Dowload Anaconda3 or Anaconda2
Install it.
Add PyQt5's path inside Anaconda installation to your System Environment Variables.
For example:
PATH: ....; C:\Anaconda3\Lib\site-packages\PyQt5; ...
It is ready to use.

If you're using Windows 10, if you use
py -m pip install pyqt5
in the command prompt it should download fine. Depending on either the version of Python or Windows sometimes python -m pip install pyqt5 isn't accepted, so you have to use py instead. pip is a good way to download a lot of stuff, so I'd recommend that.

Another command under the cmd is:
easy_install pyqt5

If you have python installed completely, it can save you the hassle. All you need to do is enter the following command in your respective shell:
pip install pyqt5
And contrary to popular belief, AS LONG AS YOU HAVE PIP INSTALLED, you can do this on virtually any OS...
Hope this helped!

If you are facing problem with pip3 install pyqt5 then try pip3 install pyqt5==5.12.0
This solved the problem for me

It can be installed with below simple command:
pip3 install pyqt5

Download whl from here http://mirrors.aliyun.com/pypi/simple/pyqt5/
pip install PyQt5-5.15.4-cp36.cp37.cp38.cp39-none-win_amd64.whl
If error comes try this
pip install --user PyQt5-5.15.4-cp36.cp37.cp38.cp39-none-win_amd64.whl
Done

If you are using canopy, use the package manager to install qt (and or pyqt)

You can easily install it using Anaconda. At first install Anaconda or Miniconda on you system (download from here) and then install the pyqt as follow:
conda install pyqt
It works for both version of python (2 and 3).

To install the GPL version of PyQt5, run (see PyQt5 Project):
pip3 install pyqt5
This will install the Python wheel for your platform and your version of Python (assuming both are supported).
(The wheel will be automatically downloaded from the Python Package Index.)
The PyQt5 wheel includes the necessary parts of the LGPL version of Qt. There is no need to install Qt yourself.
(The required sip is packaged as a separate wheel and will be downloaded and installed automatically.)
Note:
If you get an error message saying something as
No downloads could be found that satisfy the requirement
then you are probably using an unsupported version of Python.

easiest way, I think download Eric, unzip go to sources, open python directory, drag the install script into the python icon, not folder, follow prompts

C:\Users\Digiline>python3 -m pip install pyqt5
Collecting pyqt5 Downloading PyQt5-5.15.4-cp36.cp37.cp38.cp39-none-win_amd64.whl (6.8 MB) |████████████████████████████████| 6.8 MB 3.3 MB/s Collecting PyQt5-sip<13,>=12.8 Downloading PyQt5_sip-12.8.1-cp39-cp39-win_amd64.whl (63 kB) |████████████████████████████████| 63 kB 71 kB/s Collecting PyQt5-Qt5>=5.15 Downloading PyQt5_Qt5-5.15.2-py3-none-win_amd64.whl (50.1 MB) |████████████████████████████████| 50.1 MB 16 kB/s Installing collected packages: PyQt5-sip, PyQt5-Qt5, pyqt5
WARNING: The scripts pylupdate5.exe, pyrcc5.exe and pyuic5.exe are installed in 'C:\Users\Digiline\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0\LocalCache\local-packages\Python39\Scripts' which is not on PATH. Consider adding this directory to PATH or, if you prefer to suppress this warning, use --no-warn-script-location. Successfully installed PyQt5-Qt5-5.15.2 PyQt5-sip-12.8.1 pyqt5-5.15.4

I was having issue due to spyder and the versions were colliding so I tried this
pip uninstall pyqt5
pip uninstall spyder
pip install spyder
This installed all!

In the command prompt type:
pip install pyqt5

i've the same issue, but i found out that my problem was linked to the environment variables, because the cmd could not find "pip"
i edited the variables and run the command
pip3 install pyqt5
and i managed to install pyqt5 without problem
Hope that could help
check this guide it is in italian but is easy

You can try running the following:
python3 -m pip install pyqt5
and if you want to use pytqt5-tools with designer you can try with:
python3 -m pip install pip install PySide2

Hello there you can get your answers from here:
https://www.lfd.uci.edu/~gohlke/pythonlibs/
To find your module press ctrl + f then type pyqt5
then click anyone of the file which matches your system related to
PyQt5
then after you download your module extract it to python >> lib >> site-packages. then extract it there
I m done with my Answer hope its helpfull

Is it possible to require PyQt from setuptools setup.py?

I'm building a small app that uses PyQt and tought it'd be nice to declare that dependency in setup.py.
However, according to this blog (first hit on google for pyqt setuptools) says it can't be done, and the last paragraph here doens't try to do it either.
Ideas? Perhaps I should switch to PySide which is on PyPi?
Update:
The obvious install_requires = [ 'pyqt >= 0.7' ] in setup.py gives me:
D:\3rd\BuildBotIcon\my-buildboticon\python>setup.py test
running test
install_dir .
Checking .pth file support in .
C:\Python26-32\pythonw.exe -E -c pass
Searching for pyqt>=4.7
Reading http://pypi.python.org/simple/pyqt/
Reading http://www.riverbankcomputing.com/software/pyqt/
Reading http://www.riverbankcomputing.com/software/pyqt/download
No local packages or download links found for pyqt>=4.7
error: Could not find suitable distribution for Requirement.parse('pyqt>=4.7')

Right, the PyQT packages are not using distutils / setup.py for it's installation, so they can't be installed with easy_install or pip. You need to download and install it manually.
That also means you should not put it in your requires metadata, as easy_install and pip then will try to install it and fail.
I don't know if PySide is any good, but is also has not setup.py, and also refuse to install with easy_install/pip, so not a good option. :)
Another option is to repackage PyQt with distutils, but that may be a lot of work.

While you can pip install pyqt5 thanks to the now available wheels (as suggested by #mfitzp), it cannot be required from setup.py via install_requires. The reason is that setuptools doesn't know how to install wheels which pip knows how to, and PyQT5 is only available as wheels on PyPI (there is no source distribution, i.e. no tar.gz file). See this email and that bug report for details.

While the accepted answer was originally correct Python Wheels now provide a means to install C extension packages such as PyQt5 without the need for compilation from source.
PyPi currently has .whl files for PyQt5 on Python3 for multiple platforms, including MacOS X, Linux (any), Win32 and Win64. For example, this is the output when pip-installing PyQt5 on Python3 on a Mac:
mfitzp#MacBook-Air ~ $ pip3 install pyqt5
Collecting pyqt5
Downloading PyQt5-5.6-cp35-cp35m-macosx_10_6_intel.whl (73.2MB)
100% |████████████████████████████████| 73.2MB 2.5kB/s
Collecting sip (from pyqt5)
Downloading sip-4.18-cp35-cp35m-macosx_10_6_intel.whl (46kB)
100% |████████████████████████████████| 49kB 1.8MB/s
Installing collected packages: sip, pyqt5
Successfully installed pyqt5-5.6 sip-4.18
If you are targeting Python3+PyQt5 then you should have no problem specifying PyQt5 as a normal dependency in setup.py.

Setuptools >= 38.2.0 now knows how to install wheels. The trivial answer, therefore, is to install a recent version of setuptools and require that your enlightened userbase does so as well. To enforce usage of setuptools >= 38.2.0 at installation time, see this relevant answer elsewhere.
Since setuptools 38.2.0 was released over a year ago, all prior answers to this question are horrifyingly obsolete, blatantly wrong, and less than useful.