diff options
Diffstat (limited to 'index.rst')
| -rw-r--r-- | index.rst | 28 |
1 files changed, 25 insertions, 3 deletions
@@ -182,7 +182,7 @@ Basic Usage better performance. -.. function:: load(fp[, encoding[, cls[, object_hook[, parse_float[, parse_int[, parse_constant[, **kw]]]]]]]) +.. function:: load(fp[, encoding[, cls[, object_hook[, parse_float[, parse_int[, parse_constant[, object_pairs_hook[, **kw]]]]]]]]) Deserialize *fp* (a ``.read()``-supporting file-like object containing a JSON document) to a Python object. @@ -199,6 +199,17 @@ Basic Usage *object_hook* will be used instead of the :class:`dict`. This feature can be used to implement custom decoders (e.g. JSON-RPC class hinting). + *object_pairs_hook* is an optional function that will be called with the + result of any object literal decode with an ordered list of pairs. The + return value of *object_pairs_hook* will be used instead of the + :class:`dict`. This feature can be used to implement custom decoders that + rely on the order that the key and value pairs are decoded (for example, + :func:`collections.OrderedDict` will remember the order of insertion). If + *object_hook* is also defined, the *object_pairs_hook* takes priority. + + .. versionchanged:: 2.1.0 + Added support for *object_pairs_hook*. + *parse_float*, if specified, will be called with the string of every JSON float to be decoded. By default, this is equivalent to ``float(num_str)``. This can be used to use another datatype or parser for JSON floats @@ -226,7 +237,7 @@ Basic Usage only one JSON document, it is recommended to use :func:`loads`. -.. function:: loads(s[, encoding[, cls[, object_hook[, parse_float[, parse_int[, parse_constant[, **kw]]]]]]]) +.. function:: loads(s[, encoding[, cls[, object_hook[, parse_float[, parse_int[, parse_constant[, object_pairs_hook[, **kw]]]]]]]]) Deserialize *s* (a :class:`str` or :class:`unicode` instance containing a JSON document) to a Python object. @@ -242,7 +253,7 @@ Basic Usage Encoders and decoders --------------------- -.. class:: JSONDecoder([encoding[, object_hook[, parse_float[, parse_int[, parse_constant[, strict]]]]]]) +.. class:: JSONDecoder([encoding[, object_hook[, parse_float[, parse_int[, parse_constant[, object_pairs_hook[, strict]]]]]]]) Simple JSON decoder. @@ -283,6 +294,17 @@ Encoders and decoders :class:`dict`. This can be used to provide custom deserializations (e.g. to support JSON-RPC class hinting). + *object_pairs_hook* is an optional function that will be called with the + result of any object literal decode with an ordered list of pairs. The + return value of *object_pairs_hook* will be used instead of the + :class:`dict`. This feature can be used to implement custom decoders that + rely on the order that the key and value pairs are decoded (for example, + :func:`collections.OrderedDict` will remember the order of insertion). If + *object_hook* is also defined, the *object_pairs_hook* takes priority. + + .. versionchanged:: 2.1.0 + Added support for *object_pairs_hook*. + *parse_float*, if specified, will be called with the string of every JSON float to be decoded. By default, this is equivalent to ``float(num_str)``. This can be used to use another datatype or parser for JSON floats |