import FWCore.ParameterSet.Config as cms
from Configuration.Generator.Pythia8CommonSettings_cfi import *
from Configuration.Generator.Pythia8PowhegEmissionVetoSettings_cfi import *

generator = cms.EDFilter("Pythia8HadronizerFilter",
                         maxEventsToPrint = cms.untracked.int32(1),
                         pythiaPylistVerbosity = cms.untracked.int32(1),
                         filterEfficiency = cms.untracked.double(1.0),
                         pythiaHepMCVerbosity = cms.untracked.bool(False),
                         comEnergy = cms.double(13000.),
                         PythiaParameters = cms.PSet(
        pythia8CommonSettingsBlock,
        pythia8PowhegEmissionVetoSettingsBlock,        
        pythia8CUETP8M1UpVariationSettings = cms.vstring(
        		'Tune:pp 14',
       			'Tune:ee 7',
        		'MultipartonInteractions:pT0Ref=1.8238e+00',
        		'MultipartonInteractions:ecmPow=2.5208e-01',
        		'MultipartonInteractions:expPow=3.230749e+00',
        		'ColourReconnection:range=7.600778e+00',
    	),
        processParameters = cms.vstring(
            'POWHEG:nFinal = 2',   ## Number of final state particles
                                   ## (BEFORE THE DECAYS) in the LHE
                                   ## other than emitted extra parton
          ),
        parameterSets = cms.vstring('pythia8CommonSettings',
                                    'pythia8CUETP8M1UpVariationSettings',
                                    'pythia8PowhegEmissionVetoSettings',
                                    'processParameters'
                                    )
        )
                         )

ProductionFilterSequence = cms.Sequence(generator)

#https://github.com/cms-sw/genproductions/blob/f7132f542361522467a058f90719d1980699bbd7/bin/Powheg/production/WWTo2L2Nu_NNPDF30_13TeV/WWTo2L2Nu_NNPDF30_13TeV.input