changing prints to function and make selective exception import towards python 3 compatibility

pykat/commands.py

@@ -4,9 +4,12 @@ Created on Mon Jan 28 11:58:09 2013
 
 @author: Daniel
 """
+from __future__ import print_function
 import numpy
 from numpy import min,max
-import exceptions
+import pykat.external.six as six
+if six.PY2:
+	import exceptions
 from components import *
 from structs import *
 from pykat.param import Param, putter

pykat/components.py

@@ -4,7 +4,10 @@ Created on Mon Jan 28 11:10:01 2013
 
 @author: Daniel
 """
-import exceptions
+from __future__ import print_function
+import pykat.external.six as six
+if six.PY2:
+	import exceptions
 import pykat.exceptions as pkex
 import pykat
 from pykat.node_network import *

pykat/detectors.py

@@ -4,7 +4,10 @@ Created on Fri Feb 01 0split()9:09:10 2013
 
 @author: Daniel
 """
-import exceptions
+from __future__ import print_function
+import pykat.external.six as six
+if six.PY2:
+	import exceptions
 import abc
 from pykat.node_network import *
 from pykat.param import Param
@@ -878,4 +881,4 @@ class qhd(Detector2):
             for p in self._params:
                 rtn.extend(p.getFinesseText())
             
-        return rtn
\ No newline at end of file
+        return rtn

pykat/exceptions.py

-import exceptions
+from __future__ import print_function
+import pykat.external.six as six
+if six.PY2:
+	import exceptions
 import os
 
 class BasePyKatException(Exception):

pykat/gui/graphics.py

@@ -5,12 +5,15 @@ Created on Fri Feb 01 09:13:03 2013
 @author: Daniel
 """
 
+from __future__ import print_function
+import pykat.external.six as six
+if six.PY2:
+	import exceptions
 from PyQt4.QtGui import *
 from PyQt4.Qt import *
 from PyQt4 import QtSvg
 from PyQt4.QtSvg import QGraphicsSvgItem
 import pykat.components
-import exceptions
 import weakref
 
 nsize = 10

pykat/node_network.py

@@ -4,7 +4,7 @@ Created on Sun Jan 27 10:02:41 2013
 
 @author: Daniel
 """
-
+from __future__ import print_function
 from pykat import USE_GUI, NoGUIException
 
 if USE_GUI:
@@ -349,7 +349,7 @@ class NodeNetwork(object):
             return False
             
         elif isinstance(currcomp, pykat.components.isolator):
-            print "isol"
+            print("isol")
         elif isinstance(currcomp, pykat.components.laser):
             # if we are at a laser then we can't go any further
             # and it isn;t this node as we checked before

pykat/param.py

+from __future__ import print_function
 import abc
 import pykat.exceptions as pkex
 import weakref
@@ -150,7 +151,7 @@ class Param(putable, putter):
         #if this param can be put somewhere we need to check if it is
         if self.isPutable:
             for a in self.putees:
-                print "Removing put from {0} {1} to {2} {3}".format(self.owner.name, self.name, a.owner.name, a.name)
+                print("Removing put from {0} {1} to {2} {3}".format(self.owner.name, self.name, a.owner.name, a.name))
                 a._putter = None
                 self.put_count -= 1
                 
@@ -160,7 +161,7 @@ class Param(putable, putter):
         # check if we have anything being put to us
         if self.isPutter:
             if self._putter != None:
-                print "Removing put from {0} {1} to {2} {3}".format(self._putter.owner.name, self._putter.name, self.owner.name, self.name)
+                print("Removing put from {0} {1} to {2} {3}".format(self._putter.owner.name, self._putter.name, self.owner.name, self.name))
                 self._putter.put_count -= 1
                 self._putter.putees.remove(self)
                 self._putter = None