from argparse import ArgumentDefaultsHelpFormatter, ArgumentParser, FileType

def getCli():

parser = ArgumentParser(

formatter_class=ArgumentDefaultsHelpFormatter, description='Run ssh commands in parallel')

hostGroup = parser.add_mutually_exclusive_group(required=True)

hostGroup.add_argument('-f', '--hostFile', help='The host file to use', type=FileType())

hostGroup.add_argument('-n', '--hostNames', help='The host names to use', nargs='+')

commandGroup = parser.add_mutually_exclusive_group(required=True)

commandGroup.add_argument('command', help='The command to use', nargs='?')

commandGroup.add_argument(

'-c', '--commandFile', help='A file with the commands to execute', type=FileType())

parser.add_argument('-q', '--quiet', help='Do not log the output', action='store_true')

parser.add_argument(

'-s',

'--sudo',

help='Execute command as sudo. Ignored when a commandFile is used',

action='store_true')

parser.add_argument('-t', '--timeout', help='Timeout for the commands', type=float, default=10)

parser.add_argument('--noColour', help='Disable colour output', action='store_true')

parser.add_argument(

'-o',

'--only',

help='Only use the the hosts in this list. Useful with commandFile',

nargs='+')

return parser