sublime build with python virtualenv

path

~/.config/sublime-text-3/Packages/User/Python3Virtualenv.sublime-build

config

{
    "shell_cmd": "/home/ln/Code/python3/bin/python3 -u \"$file\"",
    "file_regex": "^[ ]*File \"(...*?)\", line ([0-9]*)",
    "selector": "source.python"
}