Removed exception for no systematics in LHE file
@@ -514,8 +514,8 @@ def extract_nuisance_parameters_from_lhe_file(filename, systematics):
weight_groups += initrwgt.findall("weightgroup")
except KeyError as e:
raise RuntimeError("Could not find weight groups in LHE file!\n%s", e)
- if len(weight_groups) == 0:
- raise RuntimeError("Zero weight groups in LHE file!")
+ # if len(weight_groups) == 0:
+ # raise RuntimeError("Zero weight groups in LHE file!")
logger.debug("%s weight groups", len(weight_groups))
# Loop over systematics
