[issue27497] csv module: Add return value to DictWriter.writeheader

[Raymond Hettinger]

Raymond Hettinger added the comment:

It is a bit irritating to have this small API inconsistency, but I'm a little wary of propagating this undocumented and untested behavior especially given Victor's concern about whether it makes any sense in this context.

Skip, what do you think?

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assignee:  -> skip.montanaro
nosy: +rhettinger, skip.montanaro

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<http://bugs.python.org/issue27497>
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