csv module

[Laurent Laporte]

hello,

I'm using cvs standard module under Python 2.3 / 2.4 to write a file
delimited with tabs. I use the "excel-tab" dialect to do that.

To read my CSV file, I choose to 'sniff' with a sample data in order to
get the dialect.
The problem I meet is that I get a wrong dialect: the sniffer return an
empty string delimiter. It is probably a bug in _guess_delimiter()
method.

The message I obtain is:
TypeError: bad argument type for built-in operation

Do you know a way to sniff tab-delimited data ?
Is it a known bug ?

Bye.