This is a Package Control dependency providing xdotool binary, a tool to fake keyboard/mouse input and perform window management on Linux, like AutoHotKey for Windows or Applescript for Mac. This is an example of using it

from xdotool import xdotool
wid = xdotool("search", "--onlyvisible", "--class", "rstudio")
xdotool("key", "--window", wid, "--clearmodifiers", "Return")