xonsh.lib#

`xonsh.lib.collections`	Base class for chaining DBs
`xonsh.lib.itertools`
`xonsh.lib.modules`
`xonsh.lib.os`	Xonsh extension of the standard library os module, using xonsh for subprocess calls
`xonsh.lib.subprocess`	Xonsh extension of the standard library subprocess module, using xonsh for subprocess calls