old_contents: from mythril.laser.ethereum.svm import LaserEVM
  from mythril.laser.ethereum.plugins.plugin import LaserPlugin
  
  from typing import List
  import logging
  
  log = logging.getLogger(__name__)
  
  
  class LaserPluginLoader:
      """
      The LaserPluginLoader is used to abstract the logic relating to plugins.
      Components outside of laser thus don't have to be aware of the interface that plugins provide
      """
  
      def __init__(self, symbolic_vm: LaserEVM) -> None:
          """ Initializes the plugin loader
  
          :param symbolic_vm: symbolic virtual machine to load plugins for
          """
          self.symbolic_vm = symbolic_vm
          self.laser_plugins: List[LaserPlugin] = []
  
      def load(self, laser_plugin: LaserPlugin) -> None:
          """ Loads the plugin
  
          :param laser_plugin: plugin that will be loaded in the symbolic virtual machine
          """
          log.info("Loading plugin: {}".format(str(laser_plugin)))
          laser_plugin.initialize(self.symbolic_vm)
          self.laser_plugins.append(laser_plugin)
  
      def is_enabled(self, laser_plugin: LaserPlugin) -> bool:
          """ Returns whether the plugin is loaded in the symbolic_vm
  
          :param laser_plugin: plugin that will be checked
          """
          return laser_plugin in self.laser_plugins
  
new_contents: from mythril.laser.ethereum.svm import LaserEVM
  from mythril.laser.ethereum.plugins.plugin import LaserPlugin
  
  from typing import List
  import logging
  
  log = logging.getLogger(__name__)
  
  
  class LaserPluginLoader:
      """
      The LaserPluginLoader is used to abstract the logic relating to plugins.
      Components outside of laser thus don't have to be aware of the interface that plugins provide
      """
  
      def __init__(self, symbolic_vm: LaserEVM) -> None:
          """ Initializes the plugin loader
  
          :param symbolic_vm: symbolic virtual machine to load plugins for
          """
          self.symbolic_vm = symbolic_vm
          self.laser_plugins = []  # type: List[LaserPlugin]
  
      def load(self, laser_plugin: LaserPlugin) -> None:
          """ Loads the plugin
  
          :param laser_plugin: plugin that will be loaded in the symbolic virtual machine
          """
          log.info("Loading plugin: {}".format(str(laser_plugin)))
          laser_plugin.initialize(self.symbolic_vm)
          self.laser_plugins.append(laser_plugin)
  
      def is_enabled(self, laser_plugin: LaserPlugin) -> bool:
          """ Returns whether the plugin is loaded in the symbolic_vm
  
          :param laser_plugin: plugin that will be checked
          """
          return laser_plugin in self.laser_plugins
  
subject: make typehint compatible with older python version