Gentoo "Active version of CPython 2 is not supported by..."

还是那个破python问题，居然报 "Active version of CPython 2 is not supported by..."错误，在make.conf里增加或者修改一下USE_PYTHON就行了，怎么修改可以参考：

http://www.iwangbin.com/blog/2010/12/1/gentoo-new-keyword-use-python/

http://blog.hartwork.org/?p=972