The new WinPython (version 220.127.116.11) released at 2014-12-22 come with this issue:
WinPython is a free open-source portable distribution of the Python programming language for Windows XP/7/8, designed for scientists, supporting both 32bit and 64bit versions of Python 2 and Python 3.
I use 64bit portable distribution with Python 3.3.5 (v3.3.5:62cf4e77f785, Mar 9 2014, 10:35:05) [MSC v.1600 64 bit (AM
D64)] on win32 and working very well.
From this link you can download it.
WinPython is a free scientific Python distribution for Windows that is portable.It is completely isolated from the rest of the system. Also, WinPython can be installed in a folder (will be put into your download folder)and can be moved anywhere.
You can move on an USB stick and this will make entirely functional.
WinPython is bundled with a lot of existing Python packages.
Also, it includes graphical and command-line utilities to install/uninstall any Python package easily.
This come with spyder 2.3.2 version editor to edit your scripts.
You can use also Qt with Qt designer and you also have a demo application, see: