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#4783: document that is not possible to use json.dump twice on the same stream.

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Ezio Melotti 2011-04-15 07:37:00 +03:00
parent 929e276176
commit 6033d26118
1 changed files with 5 additions and 0 deletions
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Doc/library/json.rst
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@ -156,6 +156,11 @@ Basic Usage
:meth:`default` method to serialize additional types), specify it with the :meth:`default` method to serialize additional types), specify it with the
*cls* kwarg; otherwise :class:`JSONEncoder` is used. *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]]]]]]]]]]) .. function:: dumps(obj[, skipkeys[, ensure_ascii[, check_circular[, allow_nan[, cls[, indent[, separators[, encoding[, default[, **kw]]]]]]]]]])