text: import FishBase
  import FishGlobals
  
  class FishTank:
  
      def __init__(self):
          self.fishList = []
  
      def __len__(self):
          return len(self.fishList)
  
      def getFish(self):
          return self.fishList
  
      def makeFromNetLists(self, genusList, speciesList, weightList):
          self.fishList = []
          for genus, species, weight in zip(genusList, speciesList, weightList):
              self.fishList.append(FishBase.FishBase(genus, species, weight))
  
      def getNetLists(self):
          genusList = []
          speciesList = []
          weightList = []
          for fish in self.fishList:
              genusList.append(fish.getGenus())
              speciesList.append(fish.getSpecies())
              weightList.append(fish.getWeight())
  
          return [genusList, speciesList, weightList]
  
      def hasFish(self, genus, species):
          for fish in self.fishList:
              if fish.getGenus() == genus and fish.getSpecies() == species:
                  return 1
  
          return 0
  
      def hasBiggerFish(self, genus, species, weight):
          for fish in self.fishList:
              if fish.getGenus() == genus and fish.getSpecies() == species and fish.getWeight() >= weight:
                  return 1
  
          return 0
  
      def addFish(self, fish):
          self.fishList.append(fish)
          return 1
  
      def removeFishAtIndex(self, index):
          if index >= len(self.fishList):
              return 0
          else:
              del self.fishList[i]
              return 1
  
      def generateRandomTank(self):
          import random
          numFish = random.randint(1, 20)
          self.fishList = []
          for i in range(numFish):
              genus, species = FishGlobals.getRandomFish()
              weight = FishGlobals.getRandomWeight(genus, species)
              fish = FishBase.FishBase(genus, species, weight)
              self.addFish(fish)
  
      def getTotalValue(self):
          value = 0
          for fish in self.fishList:
              value += fish.getValue()
  
          return value
  
      def __str__(self):
          numFish = len(self.fishList)
          value = 0
          txt = 'Fish Tank (%s fish):' % numFish
          for fish in self.fishList:
              txt += '\n' + str(fish)
              value += fish.getValue()
  
          txt += '\nTotal value: %s' % value
          return txt
  