Process management library
psh allows you to spawn processes in Unix shell-style way.
Unix shell is very convenient for spawning processes, connecting them into pipes, etc., but it has a very limited language which is often not suitable for writing complex programs. Python is a very flexible and reach language which is used in a wide variety of application domains, but its standard subprocess module is very limited. psh combines the power of Python language and an elegant shell-style way to execute processes.
Complete documentation is available at http://konishchevdmitry.github.com/psh/