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| -rw-r--r-- | Doc/library/json.rst | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/Doc/library/json.rst b/Doc/library/json.rst index 6c84f94241..546a09d69b 100644 --- a/Doc/library/json.rst +++ b/Doc/library/json.rst @@ -156,6 +156,11 @@ Basic Usage :meth:`default` method to serialize additional types), specify it with the *cls* kwarg; otherwise :class:`JSONEncoder` is used. + .. note:: + + Unlike :mod:`pickle` and :mod:`marshal`, JSON is not a framed protocol so + trying to serialize more objects with repeated calls to :func:`dump` and + the same *fp* will result in an invalid JSON file. .. function:: dumps(obj[, skipkeys[, ensure_ascii[, check_circular[, allow_nan[, cls[, indent[, separators[, encoding[, default[, **kw]]]]]]]]]]) |