old_contents: __author__ = 'Daniel Greenfeld, Chris Adams'
  
  VERSION = (0, 5, 1)
  
  def get_version():
      version = '%s.%s' % (VERSION[0], VERSION[1])
      if VERSION[2]:
          version = '%s.%s' % (version, VERSION[2])
      return version
  
  __version__ = get_version()
  
  def clean_html():
      raise ImportError("clean_html requires html5lib or pytidylib")
  
  def sanitize_html():
      raise ImportError("sanitize_html requires html5lib")
  
  
  try:
      import html5lib
      from utils import clean_html5lib as clean_html
      from utils import sanitize_html5lib as sanitize_html
  except ImportError:
      try:
          import tidylib
          from utils import clean_tidylib as clean_html
      except ImportError:
          pass
new_contents: __author__ = 'Daniel Greenfeld, Chris Adams'
  
  VERSION = (0, 5, 1)
  
  def get_version():
      version = '%s.%s' % (VERSION[0], VERSION[1])
      if VERSION[2]:
          version = '%s.%s' % (version, VERSION[2])
      return version
  
  __version__ = get_version()
  
  def clean_html():
      raise ImportError("clean_html requires html5lib or pytidylib")
  
  def sanitize_html():
      raise ImportError("sanitize_html requires html5lib")
  
  
  try:
      import html5lib
      from .utils import clean_html5lib as clean_html
      from .utils import sanitize_html5lib as sanitize_html
  except ImportError:
      try:
          import tidylib
          from .utils import clean_tidylib as clean_html
      except ImportError:
          pass
  
subject: Use relative imports, Python 2.6 style