检查PyQt4中QPushButton的状态？

Question

我想写一个状态为QPushButton的if条件。如果按钮被启用，我想执行if。所以，我怎样才能检查按钮的状态。

代码：

self.pushButton = QtGui.QPushButton()
self.pushbutton.setEnabled(False)

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self.pushbutton.setEnabled(False) ##some where in the another class I have enabled it this line will not be executed all the time,so I want the check state.

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if self.pushbutton.checkstate() == Enabled:  ##??? How to write this condition?
    some code I want to execute