[issue19256] Optimize marshal format and add version token.

[STINNER Victor]

STINNER Victor added the comment:

Good idea to add a version. But it should not be a token, but a mandatory header at the beginning. For example, 16 unsigned bits at the beginning.

Many file formats use a "magic" key, like "MZ" for Windows executable or "GIF" for GIF pictures. What do you think of adding such magic string (if it does not exist yet, I don't know the marshal format... is it documented somewhere?).

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue19256>
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