Get:
http://trolltech.com/developer/downloads/qt/mac
Download from 'qt-mac-opensource-4.3.2.dmg' at bottom of page.
Also available from:
http://trolltech.com/developer/downloads/qt/windows
http://trolltech.com/developer/downloads/qt/x11
http://www.riverbankcomputing.co.uk/pyqt/download.php
Download from 'PyQt-mac-gpl-4.3.1.tar.gz'.
Also for windows, linux.
http://www.riverbankcomputing.co.uk/sip/download.php
Download from 'sip-4.7.1.tar.gz'.
Also for windows.
Install:
Just double-click the .mpkg. Worked fine.
Windows & Linux: I have no idea (may be binary, may be source).
Run 'python configure.py'.
Run 'make'.
Run 'make install' as root.
Run 'python configure.py'.
Run 'make'.
Run 'make install' as root.
Everything should end up in your Python 2.5 'site-packages' directory, which, on the Mac, is at '/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/site-packages'.

Test:
Double-click on 'PyQt-mac-gpl-4.3.1/examples/tools/qtdemo/qtdemo.py':

Run AstroPy 'plots.py':

Problems?
Before killing yourself, try wxPython. This is another good graphics system for Python. Binaries are available for OS X, Windows, and Fedora Core 6/7:
http://www.wxpython.org/download.php#binaries
See also:
http://www.wxpython.org/screenshots.php
http://www.skycoyote.com/sky/Python/043007/: Window/graphics systems (about 1/3
down page)
İSky Coyote 2007