old_contents: from vint.ast.node_type import NodeType
  from vint.linting.level import Level
  from vint.linting.policy.abstract_policy import AbstractPolicy
  from vint.linting.policy_registry import register_policy
  from vint.ast.plugin.scope_plugin import ExplicityOfScopeVisibility
  
  
  @register_policy
  class ProhibitImplicitScopeVariable(AbstractPolicy):
      def __init__(self):
          super(ProhibitImplicitScopeVariable, self).__init__()
          self.reference = 'Anti-pattern of vimrc (Scope of identifier)'
          self.level = Level.STYLE_PROBLEM
  
  
      def listen_node_types(self):
          return [NodeType.IDENTIFIER]
  
  
      def is_valid(self, identifier, lint_context):
          """ Whether the identifier has a scope prefix. """
  
          linter_config = lint_context['config']
          scope_plugin = lint_context['plugins']['scope']
          explicity = scope_plugin.get_explicity_of_scope_visibility(identifier)
          is_autoload = scope_plugin.is_autoload_identifier(identifier)
  
          try:
              suppress_autoload = linter_config['policies'][self.name]['suppress_autoload']
          except KeyError:
              suppress_autoload = False
  
          is_valid = (explicity is not ExplicityOfScopeVisibility.IMPLICIT or
                      is_autoload and suppress_autoload)
  
          if not is_valid:
              self._make_description(identifier, scope_plugin)
  
          return is_valid
  
  
      def _make_description(self, identifier, scope_plugin):
          self.description = 'Make the scope explicit like `{good_example}`'.format(
              good_example=scope_plugin.normalize_variable_name(identifier)
          )
  
new_contents: from vint.ast.node_type import NodeType
  from vint.linting.level import Level
  from vint.linting.policy.abstract_policy import AbstractPolicy
  from vint.linting.policy_registry import register_policy
  from vint.ast.plugin.scope_plugin import ExplicityOfScopeVisibility
  
  
  @register_policy
  class ProhibitImplicitScopeVariable(AbstractPolicy):
      def __init__(self):
          super(ProhibitImplicitScopeVariable, self).__init__()
          self.reference = 'Anti-pattern of vimrc (Scope of identifier)'
          self.level = Level.STYLE_PROBLEM
  
  
      def listen_node_types(self):
          return [NodeType.IDENTIFIER]
  
  
      def is_valid(self, identifier, lint_context):
          """ Whether the identifier has a scope prefix. """
  
          scope_plugin = lint_context['plugins']['scope']
          explicity = scope_plugin.get_explicity_of_scope_visibility(identifier)
          is_autoload = scope_plugin.is_autoload_identifier(identifier)
  
          config_dict = lint_context['config']
          suppress_autoload = self.get_policy_option(config_dict, 'suppress_autoload', False)
  
          is_valid = (explicity is not ExplicityOfScopeVisibility.IMPLICIT or
                      is_autoload and suppress_autoload)
  
          if not is_valid:
              self._make_description(identifier, scope_plugin)
  
          return is_valid
  
  
      def _make_description(self, identifier, scope_plugin):
          self.description = 'Make the scope explicit like `{good_example}`'.format(
              good_example=scope_plugin.normalize_variable_name(identifier)
          )
  
subject: Replace try..except with get_policy_option call