i want to load data into table from nutch segments data but....

[徐厚道]

good morning everybody
      i want to load data into table from nutch segments data but i don't
understand the python script in
wikigetstart<http://wiki.apache.org/hadoop/Hive/GettingStarted#Apache_Weblog_Data>
 .

what mean's*

for line in sys.stdin


** *
does it mean's the cell value? or just a line in cell ?

i want to get the cell value . how do i?

please help me ! thanks a lot.