[newbie] Right way to access item in array?
Gerhard Häring
gh at ghaering.de
Tue Oct 28 07:12:26 EDT 2008
Diez B. Roggisch wrote:
> Gilles Ganault wrote:
>
>> Hello
>>
>> I'd like to know what the right way is to access an item in a row as
>> returned by a database:
>>
>> =====
>> import apsw
>>
>> connection=apsw.Connection("test.sqlite")
>> cursor=connection.cursor()
>>
>> rows=cursor.execute("SELECT isbn,price FROM books WHERE price IS
>> NULL")
>> for row in rows:
>>
>> #Is this right?
>> for isbn in row:
>
> No. This will iterate though all columns, not just the isbn.
>
> You can use tuple-unpacking in such cases:
>
> for row in rows:
> isbn, price = row
> ...
You can do it even in one step with APSW (and pysqlite, and others):
for isbn, price in cur.execute("select isbn, price ..."):
....
-- Gerhard
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