Run a command in the running neovim session.

nvim-command

#!/usr/bin/python2
from __future__ import print_function
from docopt import docopt
from neovim import attach
from neovim.api import NvimError
import os
import sys
__doc__ = """nvim-command - Run a command in the running neovim session.
Usage:
    nvim-command <command>..."""
if __name__ == "__main__":
    nvim = None
    try:
        nvim = attach("socket", path=os.environ["NVIM_LISTEN_ADDRESS"])
    except KeyError:
        print("No neovim session found.", file=sys.stderr)
        sys.exit(1)
    try:
        nvim.command(" ".join(docopt(__doc__)["<command>"]))
    except NvimError as e:
        print(e, file=sys.stderr)
        sys.exit(1)

I had tried to make the command handling "smarter": nvimex.py
(The result may be dumber!)

@critiqjo Sure, I did see that one. It's probably more useful for interactive use–my goal here was least surprise for scripts. You could install both, and any new features added to nvimex wont break any scripts you've written.