Python script that launches tiled synced tmux panes on specified hosts via ssh

tmux-multi-ssh-sync.py

from getpass import getuser
from sys import argv
from subprocess import call

username = getuser()
hosts = []

def multi_ssh_connection(hostnames):
    cmd = "tmux new-session 'ssh {0}@{1}' \; ".format(username, hostnames[0])

    for idx in range(len(hostnames)):
        if idx == 0:
            continue
        else:
            cmd += "split-window 'ssh {0}@{1}' \; ".format(username, hostnames[idx])

    cmd += "set-window-option synchronize-panes on \; select-layout tiled"
    return cmd

if len(argv) == 1:
    hosts = input('Enter hostnames to ssh into separated by spaces: ').split(' ')
    call(multi_ssh_connection(hosts), shell=True)
else:
    call(multi_ssh_connection(argv[1:]), shell=True)