code: def can_run_from_cli(self):
          
          ret = False
          ast_tree = ast.parse(self.body, self.path)
          calls = self._find_calls(ast_tree, __name__, "exit")
          for call in calls:
              if re.search("{}\(".format(re.escape(call)), self.body):
                  ret = True
                  break
  
          return ret
docs: return True if this script can be run from the command line