Documentation, assignment in expression.

Mon Mar 26 09:59:08 EDT 2012

Am 25.03.2012 15:03 schrieb Tim Chase:
> Perhaps a DB example
> works better. With assignment allowed in an evaluation, you'd be able to
> write
>> while data = conn.fetchmany():
> for row in data:
> process(row)
>> whereas you have to write
>> while True:
> data = conn.fetchmany()
> if not data: break
> for row in data:
> process(row)

Or simpler
for data in iter(conn.fetchmany, []):
 for row in data:
 process(row)
provided that a block of rows is returned as a list - which might be 
different among DB engines.
Thomas