Am 10.01.2012 10:02 schrieb Νικόλαος Κούρας:
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| HOST | HITS | AGENT | DATE |
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| foo | 7 | IE6 | 1/1/11 |
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| bar | 42 | Firefox | 2/2/10 |
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| baz | 4 | Chrome | 3/3/09 |
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In this line:
for host, hits, agent, date in dataset:
'dataset' is one of the rows of the mysql result or the whole mysql
result set like the table above?
dataset is a cursor, representing the whole result set.
Iterating over it produces one row at each iteration step:
for row in dataset:
...
As each row consists of 4 fields, one iteration result is a tuple of 4
elements.
In this case,
for host, hits, agent, date in dataset:
is shorthand for
for anyunusedvariablename in dataset: # take complete row
host, hits, agent, date = anyunusedvariablename # tuple unpacking
del anyunusedvariablename # remove traces
exept that the said variable isn't created.
Thomas
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