old_contents: '''
      ptop.core.plugin
      
      This module define the BaseClass for plugin. It defines the basic rules that are to be followed by a new plugin.
  '''
  
  class Plugin:
      ''' 
          Base Plugin class
      '''
      def __init__(self,name,sensorType,interval,initialValue):
          '''creates an instance of the class
  
          Initialize the instance of a Plugin class.
  
          :param name: Name of the plugin
          :param sensorType: How to render the plugin on the screen
          :param interval: The interval after which to update the stats
          :param initialValue: The initial value to be set for the plugin
          :type sensorType: Chart or Table
          :rtype: Instance of Plugin class
          '''
          self.name = name
          self.type = sensorType
          self.interval = interval
          self.currentValue = initialValue
  
      def update(self):
          '''updates the plugin value
  
          :rtype: dict 
          '''
          # to be overrided by child class
  
new_contents: '''
      ptop.core.plugin
      
      This module define the BaseClass for plugin. It defines the basic rules that are to be followed by a new plugin.
  '''
  
  class Plugin:
      ''' 
          Base Plugin class
      '''
      def __init__(self,name,sensorType,interval,initialValue):
          '''creates an instance of the class
  
          Initialize the instance of a Plugin class.
  
          :param name: Name of the plugin
          :param sensorType: How to render the plugin on the screen
          :param interval: The interval after which to update the stats
          :param initialValue: The initial value to be set for the plugin
          :type sensorType: Chart or Table
          :rtype: Instance of Plugin class
          '''
          self.name = name
          self.type = sensorType
          self.interval = interval
          self.currentValue = initialValue
  
      def update(self):
          '''updates the plugin currentValue
  
          :rtype: dict 
          '''
          # to be overrided by the child class
  
      @property
      def text_info(self):
          '''return the text part of the currentValue
  
          :rtype: dict
          '''
          return self.currentValue['text']
  
      @property
      def graph_info(self):
          '''return the graph part of the currentValue
  
          :rtype: dict
          '''
          try:
              return self.currentValue['graph']
          except KeyError:
              raise Exception('The plugin does not have any graphical information')
  
  
subject: add : accessor methods