old_contents: """_warnings provides basic warning filtering support.
  It is a helper module to speed up interpreter start-up."""
  
  
  default_action = """default"""
  
  filters = "[('ignore', None, <type 'exceptions.DeprecationWarning'>, None, 0), 
      ('ignore', None, <type 'exceptions.PendingDeprecationWarning'>, None, 0), 
      ('ignore', None, <type 'exceptions.ImportWarning'>, None, 0), 
      ('ignore', None, <type 'exceptions.BytesWarning'>, None, 0)]"
  
  once_registry = {}
  
  def warn(*args,**kw):
      """Issue a warning, or maybe ignore it or raise an exception."""
      pass
  
  def warn_explicit(*args,**kw):
      """Low-level inferface to warnings functionality."""
      pass
  
new_contents: """_warnings provides basic warning filtering support.
  It is a helper module to speed up interpreter start-up."""
  
  
  default_action = """default"""
  
  filters = [('ignore', None, DeprecationWarning, None, 0), 
      ('ignore', None, PendingDeprecationWarning, None, 0), 
      ('ignore', None, ImportWarning, None, 0), 
      ('ignore', None, BytesWarning, None, 0)]
  
  once_registry = {}
  
  def warn(*args,**kw):
      """Issue a warning, or maybe ignore it or raise an exception."""
      pass
  
  def warn_explicit(*args,**kw):
      """Low-level inferface to warnings functionality."""
      pass
  
subject: Fix _warnings.py