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class Form(QDialog):
  ........
  amountLabel = QLabel("Amount")
  self.amountLabel = QLabel()
  ........

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Python code:

>>> class T(object):
... def __init__(self):
... val = 1
... self.val = 2
... print id(val)
... print id(self.val)
...
>>> t = T()
135716664
135716652
>>> print id(t.val)
135716652





...
  amountLabel = QLabel("Amount")
  self.amountLabel = QLabel()

  layout.addWidget( amountLabel)
  layout.addWidget(self.amountLabel)
...

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Traceback (most recent call last):
  File "C:\test.py", line 80, in <module>
  cur.execute("update userdata set kb=0 where strAccountID='%s'" % name)
  ......
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