[issue18829] csv produces confusing error message when passed a non-string delimiter

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

Thank you Vajrasky for your patch. I have simplified and fixed (escapechar can be empty) it. Reverted ValueError back to TypeError because ord() raises TypeError for non-1-character strings.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue18829>
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