PYQT 自定义SLOT函数报错,该如何处理

PYQT 自定义SLOT函数报错

#!/usr/bin/python

#-*-coding:utf-8-*-

#mymoney.py


from PyQt4.QtGui import *

from PyQt4.QtCore import *

import sys


class loginW(QWidget):

    def __init__(self, parent=None):

        QWidget.__init__(self, parent)

        self.resize(250,250)

        self.setWindowTitle('login')


        userLabel=QLabel('username:')

        pwdLabel=QLabel('password:')


        userle=QLineEdit()

        pwdle=QLineEdit()


        okButton=QPushButton('OK')

        cnlButton=QPushButton('Cancel')


        grid = QGridLayout()

        grid.addWidget(userLabel,0,1)

        grid.addWidget(userle,0,2)

        grid.addWidget(pwdLabel,1,1)

        grid.addWidget(pwdle,1,2)

        grid.addWidget(okButton, 2, 1)

        grid.addWidget(cnlButton, 2, 2)

        self.setLayout(grid)


        #okButton.clicked.connect(self.okcheck)


        self.connect(okButton,SIGNAL("clicked()"),self,self.okcheck)

        self.connect(cnlButton,SIGNAL("clicked()"),self,SLOT("close()"))


	def okcheck(self):

		print 'a'



#class MainWindow(QMainWindow):

	"""docstring for MainWindow"""

	def __init__(self):

		QMainWindow.__init__(self)


		self.resize(250, 150)

		self.setWindowTitle('mymoney')


		self.statusBar().showMessage('Ready')


app=QApplication(sys.argv)

#main=MainWindow()

main=loginW()

main.show()

app.exec_()

初学PYQT,在运行以上代码时，报错：
Traceback (most recent call last):
  File "H:\pyqt\mymoney.py", line 54, in <module>
    main=loginW()
  File "H:\pyqt\mymoney.py", line 35, in __init__
    self.connect(okButton,SIGNAL("clicked()"),self,self.okcheck)
AttributeError: 'loginW' object has no attribute 'okcheck'
[Finished in 1.0s with exit code 1]

求指导
------解决方案--------------------
self.connect(okButton,SIGNAL("clicked()"),self.okcheck)
中间多了一个self
楼主要养成结贴的好习惯