old_contents: import maya.cmds as cmds
  
  def import_multiple_object_files():
      files_to_import = cmds.fileDialog2(fileFilter =  '*.obj', dialogStyle = 2, caption = 'import multiple object files', fileMode = 4)
      for file_to_import in files_to_import:
          names_list  = file_to_import.split('/')
          object_name = names_list[-1].replace('.obj', '') 
          returnedNodes = cmds.file('%s' % file_to_import, i = True, type = "OBJ", rnn=True, ignoreVersion = True, options = "mo=0",  loadReferenceDepth  = "all"  )
          cmds.rename( returnedNodes[0], object_name)
  
  import_multiple_object_files()
  
new_contents: def import_multiple_object_files():
      files_to_import = cmds.fileDialog2(fileFilter =  '*.obj', dialogStyle = 2, caption = 'import multiple object files', fileMode = 4)
      for file_to_import in files_to_import:
          names_list  = file_to_import.split('/')
          object_name = names_list[-1].replace('.obj', '') 
          returnedNodes = cmds.file('%s' % file_to_import, i = True, type = "OBJ", rnn=True, ignoreVersion = True, options = "mo=0",  loadReferenceDepth  = "all"  )
          cmds.rename( returnedNodes[0], object_name)
          for nd in returnedNodes:
  			if '|' in nd and 'Shape' not in nd:
  				cmds.rename(nd, object_name)
  import_multiple_object_files()
  
subject: Update import_multiple_object_files.py