text: 
  
  class Productivity:
      def __init__(self, irradiance, hours,capacity):
          self.irradiance = irradiance
          self.hours = hours
          self.capacity = capacity
  
      def getUnits(self):
          print(self.irradiance)
          totalpower = 0
          print(totalpower)
          for i in self.irradiance:
              power = int(self.capacity) * int(i) /1000
              totalpower = totalpower+power
          # units= (self.irradiance*self.area*self.hours)/1000
  
          return totalpower
  