[issue20023] _csv.Dialect() does not check type for delimiter, escapechar and quotechar fields

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

This is a duplicate of issue18829.

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resolution:  -> duplicate
superseder:  -> csv produces confusing error message when passed a non-string delimiter

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue20023>
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