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

[Ashish Nitin Patil]

Ashish Nitin Patil added the comment:

Thank you Berker & Skip for your review & additional inputs.
I have added a (probably not so good) unittest for testing the newly added *return*.
I have also added the corresponding *versionchanged* info to the documentation as suggested by Berker.

Will keep these in mind while making a patch next time :)
Kindly let me know if there are any further changes required.

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Added file: http://bugs.python.org/file44372/issue_27497_add_return_to_DictWriter_writeheader_v2.patch

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