[issue12291] file written using marshal in 3.2 can be read by 2.7, but not 3.2 or 3.3

[Amaury Forgeot d'Arc]

Amaury Forgeot d'Arc <amauryfa at gmail.com> added the comment:

- Please replace tabs characters by space
- "//" comments are not accepted by some picky C89 compilers

Also, calling f.read(1) for each character may have a large performance impact.  I don't know how this can be solved though.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue12291>
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