old_contents: """Supporting definitions for the Python regression test."""
  
  
  class Error(Exception):
      """Base class for regression test exceptions."""
  
  class TestFailed(Error):
      """Test failed."""
  
  class TestSkipped(Error):
      """Test skipped.
  
      This can be raised to indicate that a test was deliberatly
      skipped, but not because a feature wasn't available.  For
      example, if some resource can't be used, such as the network
      appears to be unavailable, this should be raised instead of
      TestFailed.
  
      """
  
  
  verbose = 1                             # Flag set to 0 by regrtest.py
  use_large_resources = 1 # Flag set to 0 by regrtest.py
  
  def unload(name):
      import sys
      try:
          del sys.modules[name]
      except KeyError:
          pass
  
  def forget(modname):
      unload(modname)
      import sys, os
      for dirname in sys.path:
          try:
              os.unlink(os.path.join(dirname, modname + '.pyc'))
          except os.error:
              pass
  
  FUZZ = 1e-6
  
  def fcmp(x, y): # fuzzy comparison function
      if type(x) == type(0.0) or type(y) == type(0.0):
          try:
              x, y = coerce(x, y)
              fuzz = (abs(x) + abs(y)) * FUZZ
              if abs(x-y) <= fuzz:
                  return 0
          except:
              pass
      elif type(x) == type(y) and type(x) in (type(()), type([])):
          for i in range(min(len(x), len(y))):
              outcome = fcmp(x[i], y[i])
              if outcome != 0:
                  return outcome
          return cmp(len(x), len(y))
      return cmp(x, y)
  
  TESTFN = '@test' # Filename used for testing
  from os import unlink
  
  def findfile(file, here=__file__):
      import os
      if os.path.isabs(file):
          return file
      import sys
      path = sys.path
      path = [os.path.dirname(here)] + path
      for dn in path:
          fn = os.path.join(dn, file)
          if os.path.exists(fn): return fn
      return file
  
  def verify(condition, reason='test failed'):
  
      """ Verify that condition is true. If not, raise an
          AssertionError.
  
          The optinal argument reason can be given to provide
          a better error text.
  
      """
      if not condition:
          raise AssertionError,reason
  
new_contents: """Supporting definitions for the Python regression test."""
  
  
  class Error(Exception):
      """Base class for regression test exceptions."""
  
  class TestFailed(Error):
      """Test failed."""
  
  class TestSkipped(Error):
      """Test skipped.
  
      This can be raised to indicate that a test was deliberatly
      skipped, but not because a feature wasn't available.  For
      example, if some resource can't be used, such as the network
      appears to be unavailable, this should be raised instead of
      TestFailed.
      """
  
  verbose = 1                             # Flag set to 0 by regrtest.py
  use_large_resources = 1 # Flag set to 0 by regrtest.py
  
  def unload(name):
      import sys
      try:
          del sys.modules[name]
      except KeyError:
          pass
  
  def forget(modname):
      unload(modname)
      import sys, os
      for dirname in sys.path:
          try:
              os.unlink(os.path.join(dirname, modname + '.pyc'))
          except os.error:
              pass
  
  FUZZ = 1e-6
  
  def fcmp(x, y): # fuzzy comparison function
      if type(x) == type(0.0) or type(y) == type(0.0):
          try:
              x, y = coerce(x, y)
              fuzz = (abs(x) + abs(y)) * FUZZ
              if abs(x-y) <= fuzz:
                  return 0
          except:
              pass
      elif type(x) == type(y) and type(x) in (type(()), type([])):
          for i in range(min(len(x), len(y))):
              outcome = fcmp(x[i], y[i])
              if outcome != 0:
                  return outcome
          return cmp(len(x), len(y))
      return cmp(x, y)
  
  TESTFN = '@test' # Filename used for testing
  from os import unlink
  
  def findfile(file, here=__file__):
      import os
      if os.path.isabs(file):
          return file
      import sys
      path = sys.path
      path = [os.path.dirname(here)] + path
      for dn in path:
          fn = os.path.join(dn, file)
          if os.path.exists(fn): return fn
      return file
  
  def verify(condition, reason='test failed'):
      """Verify that condition is true. If not, raise an AssertionError.
  
         The optinal argument reason can be given to provide
         a better error text.
      """
  
      if not condition:
          raise AssertionError(reason)
  
subject: Use constructor form of "raise"; normalize <wink> docstrings.