Running external commands in IPython

I'd like to run a new command from IPython configurat开发者_JAVA技巧ion and capture its output. Basically, I'd like to access the equivalent of !command via normal functions. I know I can just use subprocess, but since IPython already provides this functionality, I guess there must be a properly made wrapper included somewhere in the API.

Apparently, such wrapper can be called via ip.IP.getoutput("command").