updated caught exceptions to be 2/3 compliant

daemon/examples/netns/howmanynodes.py

@@ -150,7 +150,7 @@ def main():
                 switch = session.create_node(cls=core.nodes.network.SwitchNode)
                 switchlist.append(switch)
                 print("\nAdded bridge %s (%d) for node %d." % (switch.brname, len(switchlist), i))
-        except Exception, e:
+        except Exception as e:
             print("At %d bridges (%d nodes) caught exception:\n%s\n" % (len(switchlist), i - 1, e))
             break
 
@@ -177,7 +177,7 @@ def main():
                 sys.stdout.write(".")
             sys.stdout.flush()
             time.sleep(options.waittime)
-        except Exception, e:
+        except Exception as e:
             print("At %d nodes caught exception:\n" % i, e)
             if retry_count > 0:
                 print("\nWill retry creating node %d." % i)

daemon/examples/netns/ospfmanetmdrtest.py

@@ -129,7 +129,7 @@ class Route(object):
     def __init__(self, prefix=None, gw=None, metric=None):
         try:
             self.prefix = ipaddress.Ipv4Prefix(prefix)
-        except Exception, e:
+        except Exception as e:
             raise ValueError("Invalid prefix given to Route object: %s\n%s" % (prefix, e))
         self.gw = gw
         self.metric = metric

daemon/examples/netns/wlanemanetests.py

@@ -49,11 +49,11 @@ from core.nodes import ipaddress
 try:
     import emaneeventservice
     import emaneeventpathloss
-except Exception, e:
+except Exception as e:
     try:
         from emanesh.events import EventService
         from emanesh.events import PathlossEvent
-    except Exception, e2:
+    except Exception as e2:
         raise ImportError("failed to import EMANE Python bindings:\n%s\n%s" % (e, e2))
 
 # global Experiment object (for interaction with "python -i")
@@ -256,7 +256,7 @@ class IperfCmd(ClientServerCmd):
         lines = self.out.readlines()
         try:
             bps = int(lines[-1].split(",")[-1].strip("\n"))
-        except Exception, e:
+        except Exception as e:
             self.warn("iperf parsing exception: %s" % e)
             bps = 0
         return bps