Feature Request
I've read through examples and the current ParallelSSH can

• execute a command with different arguments
• execute different commands on different hosts

What's missing is the ability to execute multiple commands on each host and perhaps group the output to each host.

Example:

hosts = ['server1', 'server2', 'server3']
cmds = ['date', 'uptime', 'pwd']
output = client.run_command (cmds)

Current Work-Around State:

client = ParallelSSHClient (hosts, user = username, password = password)
data = [client.run_command(cmd) for cmd in cmds]
for entry in data:
    for host, host_output in entry.items ():
        print (host)
        for line in host_output.stdout:
            print (line)

Actual Output:

server1
Tue Apr  3 00:03:11 UTC 2018
server2
Tue Apr  3 00:03:11 UTC 2018
server3
Tue Apr  3 00:03:11 UTC 2018
server1
00:03:12 up 7 days, 15:27,  1 user,  load average: 0.00, 0.00, 0.00
server2
00:03:12 up 2 days, 15:27,  1 user,  load average: 0.00, 0.00, 0.00
server3
00:03:12 up 9 days, 15:27,  1 user,  load average: 0.00, 0.00, 0.00
server1
/home/username
server2
/home/username
server3
/home/username

It's not the prettiest nor do I entertain the idea of 3 nested for-loops that defeated the purpose of parallel-SSH with each loop eating into the performance. If there's a better way to implement this, let me know or if it doesn't exist, please implement it.

Preferred Output:

server1
Tue Apr  3 00:03:11 UTC 2018
00:03:12 up 7 days, 15:27,  1 user,  load average: 0.00, 0.00, 0.00
/home/username

server2
Tue Apr  3 00:03:11 UTC 2018
00:03:12 up 2 days, 15:27,  1 user,  load average: 0.00, 0.00, 0.00
/home/username

server3
Tue Apr  3 00:03:11 UTC 2018
00:03:12 up 9 days, 15:27,  1 user,  load average: 0.00, 0.00, 0.00
/home/username