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Subject: Re: sqlite3 docbug (was problem with sqlite3)
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Xref: csiph.com comp.lang.python:64577

Thanks to all,

that was indeed the tuple issue!
the correct code is:
 >>>cursor = conn.execute("SELECT filename, filepath  FROM files WHERE 
max_level<?", (threshold,))

as was pointed out by many.

Sorry for missing such a silly point (well, a comma in fact). I'll learn 
to read more seriously the doc, but I was really confused (I spent more 
than one hour trying so many combinations, reading the doc, books I 
have, etc... before posting, and I was stuck)

but the basis for my blindness was more a lack of grasp of the 
fundamentals: how to declare a one element tuple.
Because I tried to write (threshold) being convinced it was a tuple...

I need to remember at all times: https://wiki.python.org/moin/TupleSyntax

best regards.