def _warn_if_deprecated(key):
 d = _get_deprecated_option(key)
 if d:
  if d.msg:
   print d.msg
   warnings.warn(d.msg, DeprecationWarning)
  else:
   msg = ("'%s' is deprecated" % key)
   if d.removal_ver:
    msg += (' and will be removed in %s' % d.removal_ver)
   if d.rkey:
    msg += (", please use '%s' instead." % d.rkey)
   else:
    msg += ', please refrain from using it.'
   warnings.warn(msg, DeprecationWarning)
  return True
 return False

def _warn_if_deprecated ( key ) : d = _get_deprecated_option ( key ) if d : if d . msg : print d . msg warnings . warn ( d . msg , DeprecationWarning ) else : msg = ( "'%s' is deprecated" % key ) if d . removal_ver : msg += ( ' and will be removed in %s' % d . removal_ver ) if d . rkey : msg += ( ", please use '%s' instead." % d . rkey ) else : msg += ', please refrain from using it.' warnings . warn ( msg , DeprecationWarning ) return True return False
checks if key is a deprecated option and if so .