MySQLdb: TypeError: not all arguments converted ...

[Achim Domma]

> cursor.execute("insert into Webpages (Url) values (?)", (url,))
> TypeError: not all arguments converted during string formatting

I have solved it on my own, so just for the records: MySQLdb expects '%s' as
placeholder, not '?' like adodbapi. Is the placeholder specified by the
Python DB Api? Which one is wrong? Or is it an implementation detail?

Achim