def test_power(self):
powerlink = PowerLink()
data = powerlink.read()
pprint(data)
print(data['1.8.0'])
print(data['31.7'] * data['32.7'] + data['51.7'] * data['52.7'] +
data['71.7'] * data['72.7'])
def connect_power(self):
self.powerlink = PowerLink()
