278 

   278 

   279 

   279 

   280 def _iteritems(data):

   280 def _iteritems(data):

   281     '''iterate key-value pairs in stable order'''

   281     '''iterate key-value pairs in stable order'''

   282     if isinstance(data, dict):

   282     if isinstance(data, dict):

   284     return data

   284     return data

   285 

   285 

   286 

   286 

   287 class _plainconverter(object):

   287 class _plainconverter(object):

   288     '''convert non-primitive data types to text'''

   288     '''convert non-primitive data types to text'''