mc_weight

Methods for dealing with MC weights.

Classes:

mc_weight(*args, **kwargs)

class mc_weight(*args, **kwargs)

Bases: Producer

Attributes:

cache_instances
data_only
mc_only
produces
uses

Methods:

call_func(events, **kwargs)	Reads the genWeight and LHEWeight columns and makes a decision about which one to save.
skip_func(**kwargs)
update_cls_dict(cls_name, cls_dict, get_attr)

cache_instances = True

call_func(events, **kwargs)

Reads the genWeight and LHEWeight columns and makes a decision about which one to save. This should have been configured centrally [1] and stored in genWeight, but there are some samples where this failed.

Strategy: :rtype: Array

1. Use LHEWeight.originalXWGTUP when it exists and genWeight is always 1.

2. In all other cases, use genWeight.

[1] https://twiki.cern.ch/twiki/bin/view/CMSPublic/WorkBookNanoAOD?rev=99#Weigths

data_only = False

mc_only = True

produces = {'mc_weight'}

skip_func(**kwargs) → bool

Return type:

bool

static update_cls_dict(cls_name, cls_dict, get_attr)

uses = {'genWeight', <Route 'LHEWeight.originalXWGTUP' (tags=optional)>}