extended_threading extension of the python threading api (1) subclassable locks (2) read/write mode lock (write locks are exclusive, read locks are not) (3) "safe" object based locks to help debug lock code. http://www.var-dev.net/programming/python/extended_threading/extended_threading-0_2.tar.bz2 S James S Stapleton 7ab0be7be94c1c4b2398ba886a6f0a1a9307c960 0.2