evaluator

class coffea.lookup_tools.evaluator(names, types, primitives)[source]

Bases: object

The evaluator class serves as a single point of extry for looking up values of histograms and other functions read in with the extractor class. Stored look ups can be indexed by name and then called through an overloaded __call__ function.

Example:

#assuming 'eta' and 'pt' are array like objects
wgts = "testSF2d scalefactors_Tight_Electron tests/samples/testSF2d.histo.root"
extractor.add_weight_sets([wgts])
extractor.finalize(reduce_list=['testSF2d'])
evaluator = extractor.make_evaluator()
out = evaluator["testSF2d"](eta, pt)

The returned value has the same shape as the input arguments.

lookup_types is a map of possible contructors for extracted data

Methods Summary

keys()

returns the available functions

Methods Documentation

keys()[source]: returns the available functions