optimized parameters

python/helicalscan.py

@@ -64,6 +64,9 @@ verbose bits:
 #dx,dz,w,fy -> pb coord. be aware of inverted dx,dz signs
 from __future__ import print_function
 #from __future__ import absolute_import,division,generators,nested_scopes,print_function,unicode_literals,with_statement
+try: raw_input;input=raw_input
+except NameError: pass
+
 import os, sys, json,re
 import numpy as np
 import matplotlib as mpl
@@ -76,8 +79,6 @@ from utilities import *
 import telnetlib
 
 sys.path.insert(0,os.path.expanduser('~/Documents/prj/SwissFEL/PBTools/'))
-#sys.path.insert(0,'/sf/bernina/config/swissmx/zamofing_t')
-#sys.path.insert(0,'/sf/bernina/config/swissmx/zamofing_t/pbtools/misc/')
 from  pbtools.misc.pp_comm import PPComm
 from  pbtools.misc.gather import Gather
 from MXMotion import MotionBase
@@ -1207,14 +1208,23 @@ close
 if __name__=='__main__':
   def run_test(args):
     mode=args.mode
-    #args.host=None
-
-    if args.host is None or mode in(3,4):
+    if mode in(3,4):
       comm=gather=None
     else:
-      comm = PPComm(host=args.host)
-      gather = Gather(comm)
-      gpascii = comm.gpascii
+      import socket
+      s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)  # create an INET, STREAMing socket
+      s.settimeout(.1)
+      try:
+        port=22 #ssh port
+        s.connect((args.host, port))  # try to connect to port
+        s.close()
+      except (socket.error, socket.gaierror) as e:
+        comm=gather=None
+      else:
+        comm = PPComm(host=args.host)
+        gather = Gather(comm)
+
+
 
     # direct start
     #hs=HelicalScan(comm, gather, args.verbose,sync_mode=0,pt2pt_time=20)