csv module

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

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

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

Using a file with the following contents:

    >>> open("tabber.csv", "rb").read()
    '1\t2\tabc\n3\t4\tdef\n'

I get:

    >>> sniffer = csv.Sniffer()
    >>> d = sniffer.sniff(open("tabber.csv", "rb").read())
    >>> d.delimiter
    '\t'

Can you provide a concrete example (preferably in a bug report on SF)?

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