Cython (http://cython.org/) is a language (and compiler for the same) that bridges C/C++ and Python. It uses the file extensions pyx, pxd, and pxi for its source files. Many projects like NumPy, Sage etc use it. Currently (KDE 4.10.2 on my Kubuntu Raring system) Cython source files are not recognized and no special icon is displayed for them. It is requested to recognize these extensions under the mimetype text/x-cython and provide an icon for them. Since I didn't know under which product to file the bug, I did it under dolphin. Please fix if inappropriate. Mailing list post of project author confirming appropriate file mimetype and extensions: https://groups.google.com/d/msg/cython-users/cl3vap6wQY0/0EuYwkijO44J The official logo is found at: http://en.wikipedia.org/wiki/File:Cython-logo.svg but it would seem that this is not "free", but I've asked the devels about it. (Same thread as above.)
Please do not use the file referenced above. The correct logo file is available from the official project home page: http://cython.org/logo/cython-logo.svg A version that is more suitable for quadratic icons is here: http://cython.org/logo/cython-logo-C.svg It is subject to the legal terms of the official Python Logo, as stated by the Python Software Foundation (PSF). http://www.python.org/psf/trademarks Since the official Python logo is used for .py files by KDE, I assume that this logo can be used for Cython files without the risk of legal issues.
(In reply to comment #0) > Since I didn't know under which product to file the bug, I did it under > dolphin. Please fix if inappropriate. Mime type information for KDE and other projects is provided by http://freedesktop.org/wiki/Software/shared-mime-info . Please send any reports about issues with the mime type database there. When the mime type is updated there, providing the icon is Oxygen's job, I think.