请高手帮我看看setfilter的参数那里错了?
如下：
sqlfilter = "yearnow = " + " year_f " + "and monthnow = " + " month_f " + "and xunnow = " + " xun_f " + "and class = " + " class_f " + "and factory = " + " factor_f "
dw_1.setfilter=(sqlfilter)
dw_1.retrieve()
其中yearnow,monthnow,xunnow,class,factory为字段
year_f,month_f,xun_f,class_f,factory_f为string变量
[385 byte] By [superboy_11-超人] at [2008-5-20] 