old_contents: import os
  for module in os.listdir(os.path.dirname(__file__)):
      if module == '__init__.py' or module[-3:] != '.py' or module[-4:] != '.pyc' or module[-4:] != '.pyo':
          continue
      __import__(module[:-3], locals(), globals())
  del os
new_contents: import os
  for module in os.listdir(os.path.dirname(__file__)):
      if module == '__init__.py' or module[-3:] != '.py' or module[-4:] != '.pyc' or module[-4:] != '.pyo':
          continue
      __import__(module[:-3], locals(), globals())
  del module
  del os
subject: fix mass import