"???????? ??????" <nikos.kou...@gmail.com> wrote in message news:afd612b7-2366-40be-badf-13c97655f...@o12g2000vbd.googlegroups.com... > > So that means that > > for host, hits, agent, date in dataset: > > is: > > for host, hits, agent, date in (foo,7,IE6,1/1/11) > > and then: > > for host, hits, agent, date in (bar,42,Firefox,2/2/10) > > and then: > > for host, hits, agent, date in (baz,4,Chrome,3/3/09) > > > So 'dataset' is one row at each time? > but we said that 'dataset' represent the whole result set. > So isnt it wrong iam substituting it with one line per time only?
No. 'for host, hits, agent, date in dataset:' is equivalent to - for row in dataset: # iterate over the cursor, return a single row (tuple) for each iteration host, hits, agent, date = row # unpack the tuple and assign the elements to their own names For the first iteration, row is the tuple ('foo', 7, 'IE6', '1/1/11') For the next iteration, row is the tuple ('bar', 42, 'Firefox', '2/2/10') For the next iteration, row is the tuple ('baz', 4, 'Chrome', '3/3/09') The original line uses a python technique that combines these two lines into one. HTH Frank Millman -- http://mail.python.org/mailman/listinfo/python-list