rg3/youtube-dl — pull request #471 by Tailszefox (2012-10-15 12:32:46+00:00)
Title: check_output is only supported by Python 2.7 onwards

This should fix #470, and works with both Python 2.6 and 2.7. Not tested on Windows, but it should wok just as well.

Popen also returns a OSError exception if the executable file doesn't exist so it shouldn't disrupt the rest of the code.