infi.execute is a utility for running processes in various ways. It provides several facilities, most of which are simply convenience wrappers over existing stdlib functionality.
A runner abstracts a destination for executing commands. infi.execute exposes the LocalRunner class for running commands locally, and the SSHRunner for running commands through ssh.
Runners support the popen method, which replicates the basic subprocess.Popen interface, but also support extensions on top of it (see below).
execute is a family of functions to perform the popular task of executing commands while capturing their stdout and stderr streams, possibly supplying a custom stdin stream. This is most useful for shell commands or system commands. execute is another method of the Runner class, making use of the popen method.
execute_async is another flavor, returning an async result that can be waited upon.