JetRecConfig: python 3 fixes

 - Relative imports
 - Comparisons of JetGhost

Reconstruction/Jet/JetRecConfig/python/JetRecConfig.py

@@ -154,7 +154,7 @@ def resolveDependencies(jetdef):
     
     # Accumulate prerequisites of the ghost-associated types
     jetlog.info("  Full list of ghosts: ")
-    for ghostdef in sorted(list(ghostdefs)):
+    for ghostdef in sorted(list(ghostdefs), key=lambda g: g.inputtype):
         jetlog.info("    " + str(ghostdef))
         gprereqs = getGhostPrereqs(ghostdef)
         prereqdict["input"].update( [req.split(':',1)[1] for req in gprereqs] )
@@ -263,7 +263,7 @@ def JetInputCfg(inputdeps, configFlags, sequenceName):
             jetlog.debug("Preparing Constit Mods for label {0} from {1}".format(constit.label,constit.inputname))
             # May need to generate constituent modifier sequences to
             # produce the input collection
-            import ConstModHelpers
+            from . import ConstModHelpers
             constitalg = ConstModHelpers.getConstitModAlg(constit)
             if constitalg:
                 components.addEventAlgo(constitalg)

Reconstruction/Jet/JetRecConfig/python/StandardJetDefs.py

-# Copyright (C) 2002-2018 CERN for the benefit of the ATLAS collaboration
+# Copyright (C) 2002-2020 CERN for the benefit of the ATLAS collaboration
 
 ########################################################################
 #                                                                      #
@@ -17,7 +17,7 @@
 
 ########################################################################
 # Typical jet constituents
-from JetDefinition import xAODType, JetConstit
+from .JetDefinition import xAODType, JetConstit
 from copy import deepcopy
 
 # Topoclusters with origin correction.
@@ -53,7 +53,7 @@ TruthWZ = JetConstit(xAODType.TruthParticle,["NoWZ"])
 # Typical jet algorithm definitions
 # Filter pts, ghost lists and modifier lists can be updated by the user,
 # though there is some risk of overwriting...
-from JetDefinition import JetDefinition
+from .JetDefinition import JetDefinition
 
 # Standard small-radius (0.4) AntiKt jets
 AntiKt4LCTopo = JetDefinition("AntiKt",0.4,LCTopoOrigin)