old_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  
  from __future__ import (absolute_import, division,
                          print_function, unicode_literals)
  from builtins import *
  
  __author__ = 'Chia-Jung, Yang'
  __email__ = 'jeroyang@gmail.com'
  
  with open('VERSION') as f:
      __version__ = f.read().strip()
  
new_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  
  from __future__ import (absolute_import, division,
                          print_function, unicode_literals)
  from builtins import *
  
  from txttk import nlptools, retools, feature
  
  __all__ = ['feature', 'nlptools', 'retools']
  __author__ = 'Chia-Jung, Yang'
  __email__ = 'jeroyang@gmail.com'
  
  with open('VERSION') as f:
      __version__ = f.read().strip()
  
subject: simplify import