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Bug #839075: document that highly recursive data cannot be pickled

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Georg Brandl 2005-12-26 23:27:49 +00:00
parent c47f1c194a
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Doc/lib/libpickle.tex
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@ -372,6 +372,10 @@ section~\ref{pickle-protocol} for details)
Attempts to pickle unpicklable objects will raise the
\exception{PicklingError} exception; when this happens, an unspecified
number of bytes may have already been written to the underlying file.
Trying to pickle a highly recursive data structure may exceed the
maximum recursion depth, a \exception{RuntimeError} will be raised
in this case. You can carefully raise this limit with
\function{sys.setrecursionlimit()}.
Note that functions (built-in and user-defined) are pickled by ``fully
qualified'' name reference, not by value. This means that only the