# $ cd <path-to-nepi>
# python examples/linux/ping.py -a <hostname> -u <username> -i <ssh-key>
+from __future__ import print_function
from nepi.execution.ec import ExperimentController
-from optparse import OptionParser, SUPPRESS_HELP
+# SUPPRESS_HELP was not used here, but:
+# to suppress an arg from the help, use
+# add_argument( help=argparse.SUPPRESS)
+from argparse import ArgumentParser
import os
-usage = ("usage: %prog -a <hostanme> -u <username> -i <ssh-key>")
+parser = ArgumentParser()
+parser.add_argument("-u", "--username", dest="username",
+ help="Username to SSH to remote host")
+parser.add_argument("-i", "--ssh-key", dest="ssh_key",
+ help="Path to private SSH key to be used for connection")
+# this is required
+parser.add_argument("hostname", type=str)
-parser = OptionParser(usage = usage)
-parser.add_option("-a", "--hostname", dest="hostname",
- help="Remote host", type="str")
-parser.add_option("-u", "--username", dest="username",
- help="Username to SSH to remote host", type="str")
-parser.add_option("-i", "--ssh-key", dest="ssh_key",
- help="Path to private SSH key to be used for connection",
- type="str")
-(options, args) = parser.parse_args()
+args = parser.parse_args()
-hostname = options.hostname
-username = options.username
-ssh_key = options.ssh_key
+hostname = args.hostname
+username = args.username
+ssh_key = args.ssh_key
ec = ExperimentController(exp_id = "ping-exp")
ec.wait_finished(app)
-print ec.trace(app, "stdout")
+print(ec.trace(app, "stdout"))
ec.shutdown()