#4785: document strict argument of JSONDecoder, plus add object_pairs_hook in the docstrings.

1 files changed, 14 insertions, 0 deletions

diff --git a/Lib/json/decoder.py b/Lib/json/decoder.py
index 6596154..5747fa6 100644
--- a/Lib/json/decoder.py
+++ b/Lib/json/decoder.py
@@ -294,6 +294,15 @@ class JSONDecoder(object):
         place of the given ``dict``.  This can be used to provide custom
         deserializations (e.g. to support JSON-RPC class hinting).
 
+        ``object_pairs_hook``, if specified will be called with the result of
+        every JSON object decoded with an ordered list of pairs.  The return
+        value of ``object_pairs_hook`` will be used instead of the ``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,
+        collections.OrderedDict will remember the order of insertion). If
+        ``object_hook`` is also defined, the ``object_pairs_hook`` takes
+        priority.
+
         ``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
@@ -309,6 +318,11 @@ class JSONDecoder(object):
         This can be used to raise an exception if invalid JSON numbers
         are encountered.
 
+        If ``strict`` is false (true is the default), then control
+        characters will be allowed inside strings.  Control characters in
+        this context are those with character codes in the 0-31 range,
+        including ``'\\t'`` (tab), ``'\\n'``, ``'\\r'`` and ``'\\0'``.
+
         """
         self.object_hook = object_hook
         self.parse_float = parse_float or float