my cmd2.Cmd wrapper with a workaround, simply replaces b'' w/ {}

     def do_deletebuild(self, args):                                                                  
          """delete build numbers                                                                      
                                                                                                       
          WIP, fails on maybe_add_crumb                                                                
          https://<email address hidden>/msg00533.html     
          """                                                                                          
          if hasattr(self, 'jobs'):                                                                    
              _jobs = self.jobs                                                                        
          else:                                                                                        
              # this is the path for nested jobs                                                       
              # e.g. Release_3.3/GOLD/PERFORMANCE/EDGE1000 property lastBuild                          
              _jobs = args[:1]                                                                         
              args = args[1:]                                                                          
          if isinstance(_jobs[0], str):                                                                
              _jobs[0] = dict(name=_jobs[0])                                                           
          jobname = _jobs[0]['name']                                                                   
          try:                                                                                         
              numbers = int(args[0])                                                                   
              if numbers < 0:                                                                          
                  # TODO all but N newest                                                              
                  pass                                                                                 
              numbers = range(numbers, numbers + 1)                                                    
          except ValueError:                                                                           
              numbers = args[0].split('-')                                                             
              numbers = range(int(numbers[0]), int(numbers[1]) + 1)                                    
              # delete a range                                                                         
                                                                                                       
          for number in numbers:                                                                       
              folder_url, short_name = self.server._get_job_folder(jobname)                            
              url = self.server._build_url(jenkins.DELETE_BUILD, locals())                             
              headers = {}                                                                             
              self.server.jenkins_open(requests.Request('POST', url, headers))