old_contents: import os
  from sys import path
  from sys import platform as __platform
  
  if __platform.startswith('linux'):
      path.append(os.path.dirname(__file__) + '/../../..')
  if __platform.startswith('win'):
      path.append(os.path.dirname(__file__) + '/../../../bin')
  if __platform.startswith('darwin'):
      path.append(os.path.dirname(__file__) + '/../../../../../MacOS')
  
  import libngpy
  del environ
  del path
  
new_contents: import os
  from sys import path
  from sys import platform as __platform
  
  if __platform.startswith('linux'):
      path.append(os.path.dirname(__file__) + '/../../..')
  if __platform.startswith('win'):
      path.append(os.path.dirname(__file__) + '/../../../bin')
  if __platform.startswith('darwin'):
      path.append(os.path.dirname(__file__) + '/../../../../../MacOS')
  
  import libngpy
  del path
  
subject: remove del environ (its not there any more)