Length of an Unsized Object

[Victor Subervi]

Hi;
I have this code:

        sql = 'describe %s %s;' % (optionsStore, option)
        print sql
        cursor.execute(sql)
        descr = cursor.fetchone()
        if len(descr) is not None:

Python complains:

*TypeError*: len() of unsized object

Please advise how to rewrite the last line so as to avoid the infamous
try/except.
TIA,
beno

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