Can\'t download any python Windows modules and install. I wanted to experiment with scrapy framework and stackless but unable to install due to error \"Python version 2.6 re
Depending on the target build platforms and running architecture, Windows registry keys can be redirected for applications as Hans Passant points out here Getting Windows serial number (was: Getting MachineGuid from Registry). To get around this you can install the 32 bit version until the installer is changed to access the correct part of the registry.
To avoid such issues I switched to activepython and its working fine till now (fingers crossed).
The community version (read free) is here - http://www.activestate.com/activepython/downloads
Warning for new viewers: this answer is now several years old (the clue is that it describes Windows 7 as "new"). By now (2014) most Python libraries should have 64-bit support. However, if you still have problems you can always take the advice of @KamilSzot and install 32-bit Python instead. In most cases it probably doesn't matter that much.
[In 2010] it appears there are a lot of Python utilities which don't work on 64-bit Windows 7, as it's still a very new platform. So you may frequently find yourself on the cutting edge, which is not a comfortable place for someone who describes themselves as a beginner.
For instance, Valentine Gogichashvili discusses a potential solution here but do you know enough Python to understand what it's doing?