我也遇到与seraphliu类似的问题！程序是用python写的，用Qt做界面，做了一个显示数据库表的表格窗口。但是当关闭这个表格窗口时，内存并不释放。据说python有自己的内存回收功能，不用程序员操心。但如果python不释放，该怎么办？下面是我的部分python程序：
...
self.connect(self.applyBtn,SIGNAL("clicked()"),self.showAll)
...
def showAll(self):
if self.filename:
self.a=Form1(self,value=self.filename)
self.a.show()
class Form1(QDialog):
def __init__(self, parent=None, value=None):
QDialog.__init__(self, parent, "View Whole Table")
self.value=value
self.table1 = QTable(self,"table1")
self.table1.setGeometry(QRect(0,0,800,560))
self.table1.setMinimumWidth(200)
mydb=MySQLdb.Connect(host="localhost", db="test",user="root",passwd="root")
mycursor=mydb.cursor()
stmt="select max(index) from %s"% str(self.value)
mycursor.execute(stmt)
result = mycursor.fetchone()
numEx=result[0]
self.table1.setNumRows(numEx)
stmt="describe %s"% str(self.value)
mycursor.execute(stmt)
result = mycursor.fetchall()
numCo=len(result);
self.table1.setNumCols(numCo)
self.languageChange()
hheader=self.table1.horizontalHeader()
stmt="select * from %svartype"% str(self.value)
mycursor.execute(stmt)
result = mycursor.fetchall()
i=0
jj=0
for record in result:
if jj==0:
for nam in record:
clonam=nam
hheader.setLabel(i, unicode(clonam,'MBCS'))
i +=1
jj +=1
j=0
while(j<numCo):
stmt="select var%s from %s" %(j,self.value)
mycursor.execute(stmt)
result = mycursor.fetchall()
i=0
for record in result:
x=record[0]
self.table1.setText(i, j, unicode(str(x),'MBCS'))
i +=1
j +=1
mycursor.close()
mydb.close()
def languageChange(self):
self.setCaption(self.__tr("Form1"))
def __tr(self,s,c = None):
return qApp.translate("Form1",s,c)
