Hi
i hava a db ORACLE 10G,a table valid_card
(card_no,varchar2(10),now_balance number (12,2))
its'some record in table ('7188','42055.66')
i use cx_Oracle to select now_balance from table
curobj.execute("select loan_amount from valid_card
where
card_no='7188'");
[<NumberVar object at 0x013A6920>]
>>> tuple=curobj.fetchone()
>>> tuple
(42505.660000000003)
why 42505.66---->42505.6600000000003???
and how to select number field from oracle?
thanks
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