Define a slot function with two parameters through the @PyQt4.QtCore.pyqtSlot(str, str) decoration method
The decomposition is messageSlot = QtCore.pyqtSlot(str, str)(messageSlot)
First, QtCore.pyqtSlot(str, str) returns a function, assuming A
Then, the function runs A(messageSlot)
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Define a slot function with two parameters through the @PyQt4.QtCore.pyqtSlot(str, str) decoration method
The decomposition is messageSlot = QtCore.pyqtSlot(str, str)(messageSlot)
First, QtCore.pyqtSlot(str, str) returns a function, assuming A
Then, the function runs A(messageSlot)
Just understand it as
messageSlot = QtCore.pyqtSlot(str, str)(messageSlot)That’s fine.