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eventsfwlite.py
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eventsfwlite.py
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class Events(object):
def __init__(self, files, tree_name, options=None):
from DataFormats.FWLite import Events as FWLiteEvents
#TODO not sure we still need the stuff below
from ROOT import gROOT, gSystem, AutoLibraryLoader
print "Loading FW Lite"
gSystem.Load("libFWCoreFWLite");
gROOT.ProcessLine('FWLiteEnabler::enable();')
gSystem.Load("libFWCoreFWLite");
gSystem.Load("libDataFormatsPatCandidates");
from ROOT import gInterpreter
gInterpreter.ProcessLine("using namespace reco;")
gInterpreter.ProcessLine("using edm::refhelper::FindUsingAdvance;")
if options is not None :
if not hasattr(options,"inputFiles"):
options.inputFiles=files
if not hasattr(options,"maxEvents"):
options.maxEvents = 0
if not hasattr(options,"secondaryInputFiles"):
options.secondaryInputFiles = []
self.events = FWLiteEvents(options=options)
else :
self.events = FWLiteEvents(files)
def __len__(self):
return self.events.size()
def __getattr__(self, key):
return getattr(self.events, key)
def __getitem__(self, iEv):
self.events.to(iEv)
return self