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Yang Zhang wrote:
> for i in (str(row[0]) for row in conn.cursor().execute('SELECT key FROM
> shelf ORDER BY ROWID')):
You are converting the key which is an integer into a string for no
apparent reason.
If you also ask for the ROWID you will see that what is happening is a
new rowid is generated for the replaced row so that if you are iterating
over the table while modifying it then you effectively have an infinite
length table.
> Any way to solve this problem?
You currently have the SELECT results being read back one at a time
(lazily) on each iteration of the for loop. The simplest solution is to
read them all in first. Add .fetchall() after the execute.
Roger
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