How to install SIP & PyQT on windows 7

Question

I\'m a newbie to Python environment & really struggling to install SIP & PyQt on my Win 7 machine.

This is what I\'ve done so far,

1. I\'

Answer 1

There's a ONE SHOT solution to all your installation problems on Windows. Go to this website. http://www.lfd.uci.edu/~gohlke/pythonlibs/. Navigate to the library you want and download the .whl file for your python version and your computer (32 or 64 bit.) Then run pip install YourWhlFileName.whl, and you're done! (CAUTION: MAKE SURE NOT TO CHANGE THE NAME OF THE WHL FILE OR IT WON'T WORK.)

Answer 2

For next users who need to build sip (or pyqt) in windows using sources

ALL these instructions are for 32-bits, it will work even if you have a 64-bit system.

For Qt 5.9.x :

Since Qt 5.9, there is only one version of Qt downloadable for Windows that includes the pre-built components for MSVC201x and MinGW.

The instructions follow the same steps as for Qt 5.8

Since Microsoft Visual Studio 2015 Community Edition is not available to download anymore, next users should use Microsoft Visual Studio 2017 Community Edition with Qt 5.9 and follow the same instructions below.

1. Microsoft Visual Studio 2017 Community Edition (32-bits)

   • https://www.visualstudio.com/downloads/

2. Qt 5.9.x

   • http://download.qt.io/archive/qt/

When Installing Qt, make sure to select the correct pre-built components you have (for e.g Microsoft Visual Studio 2017)

For Qt 5.8 and earlier :

Downloads

1. Download Python 3.6.x (32-bits) any version will do it :

   • https://www.python.org/downloads/

(if you also have python 2.7, make sure to use verions 3 of python)

2. Download sources for sip and PyQt5: Under "Source Packages", download the "Windows Source"

   • https://www.riverbankcomputing.com/software/sip/download
   • https://www.riverbankcomputing.com/software/pyqt/download5

3. Microsoft Visual Studio 2015 Community Edition (32-bits)

   • https://www.microsoft.com/en-us/download/details.aspx?id=48146

4. Qt 5.8.0 for Windows 32-bit (VS 2015, 1.0 GB)

   • http://download.qt.io/archive/qt/

Qt download link must match the Visual Studio (VS) version installed (here VS 2015) and the PyQt5 version you need to install

For example:

• PyQt5.8.2
• Qt5.8.0 (Link for VS 2015)
• Microsoft Visual Studio 2015

Compilation

Open a terminal and stay on it.

It is important you stay on the same terminal (cmd.exe) during the whole process so you don't have to source your environment twice.

Let's create an environment to compile PyQt and SIP (in order to compile PyQt, you need first to compile sip)

• Create a folder "compilation" in your Desktop for example:
• Extract the content of your sip archive in this forlder
• Extract the content of your PyQt5 archive in this forlder

You should have now :

.
├── compilation
|   ├── sip-4.19.2/
|   └── PyQt5_gpl-5.8.2/

Make sure you are using Python 3.x:

1 - SIP

Go to sip-4.19.2 folder and run :

python configure.py

At this step, you did not install sip, you only configured it (basically its installation dir, etc...)

VERY IMPORTANT STEP: source your environment variables by running in the terminal :

Keep the double quotes, windows does not like spaces ...

"C:\Qt\Qt5.8.0\5.8\msvc2015\bin\qtenv2.bat"

After running this command, it automatically change your current directory, stay on the terminal and re-go to your sip-4.19.2 directory and run:

"C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat"

In windows, "make" is substituted by "nmake" !

Then (always in the same terminal) you run :

nmake

[...]

nmake install

This will create a sip.exe in your Python dir, for me it is C:\Python36, it may elsewhere, depending on where you installed Python.

2 - PyQt5

The steps are almost the same as sip but it will take more time.

Go to PyQt5_gpl-5.8.2 folder and run :

python configure.py --disable QtNfc --confirm-license

Note that this command disable QtNfs because of a compilation problem I could not resolve.. and automatically accepts the license.

Then, run (the compilation will take a while) :

nmake
nmake install

Hope this helps.

Answer 3

This is for all that want to build PyQt4 with latest Qt4 and Python 3.4.x.

Download Visual Studio 2010 from here: http://download.cnet.com/Microsoft-Visual-Studio-2010-Ultimate/3000-2383_4-75450998.html

then install it.

Download SIP source code (in my case version 4.19.5) from here: https://www.riverbankcomputing.com/software/sip/download

Download PyQt4 source code (in my case version 4.12.1) from here: https://www.riverbankcomputing.com/software/pyqt/download

Extract SIP and PyQt .zip archive in \Users\your_username\Desktop\compilation\

Download latest Qt 4.x (vs2010 version) installer from here: http://download.qt.io/archive/qt/

Install Qt (in my case qt-opensource-windows-x86-vs2010-4.8.6.exe).

Open a command prompt (use this one for all the process) and execute these commands:

cd \Users\<your_username>\Desktop\compilation\sip-4.19.5
python configure.py
"C:\Qt\4.8.6\bin\qtvars.bat"

In the output take note of QMAKESPEC value, in my case win32-msvc2010, then use it later on --spec option for PyQt4 configure-ng script.

If the current directory has been changed, execute again:

cd \Users\<your_username>\Desktop\compilation\sip-4.19.5

Now, if you use 64-bit version of Python execute:

"C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\vcvarsall.bat"

otherwise, if you use 32-bit version of Python execute:

"C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\bin\vcvars32.bat"
nmake
nmake install
cd \Users\<your_username>\Desktop\compilation\PyQt4_gpl_win-4.12.1

Now use previous QMAKESPEC value in --spec option:

python configure-ng.py --spec win32-msvc2010
nmake
nmake install

That's all ;-)

NOTE: in some cases, in order to avoid this error

ImportError: DLL load failed: The specified procedure could not be found.

it is necessary to copy .dll files from

C:\Qt\4.8.6\bin

to

C:\Python34\Lib\site-packages\PyQt4