list of 2-tuples of the form (`master_meter`, `slave_meter`)
zipped = []
for master_meter in master.submeters():
slave_identifier = master_meter.identifier._replace(
dataset=slave.dataset())
slave_meter = slave[slave_identifier]
After Change
list of 2-tuples of the form (`master_meter`, `slave_meter`)
zipped = []
for master_meter in master.submeters().meters:
slave_identifier = master_meter.identifier._replace(
dataset=slave.dataset())
slave_meter = slave[slave_identifier]