text: from redis import Redis
  
  
  class PreviousColorsRedis:
  
      def __init__(self):
          self.connect()
  
      def connect(self):
          self.db = Redis('localhost', 6379)
  
      def setCurrentColor(self, current_color):
          r = self.db
          r.set("current", current_color)
  
  
      def getCurrentColor(self, *kwargs):
          r = self.db
          value = r.get("current")
          if not value:
              r.set("current", *kwargs)
              value = r.get("current")
              return value.decode()
          return value.decode()
  
      def setPreviousColor(self, prev_color):
          r = self.db
          r.set("previous", prev_color)
  
      def getPreviousColor(self):
          r = self.db
          value = r.get("previous")
          if not value:
              return "Previous color not set yet"
          return value.decode()
  
      def updatePreviousColor(self, current_color):
          previous_value = self.getCurrentColor(current_color)
          if current_color == previous_value:
              pass
          else:
              self.setCurrentColor(current_color)
              self.setPreviousColor(previous_value)
  
  