PyQt 没有button.clicked.connect 函数？

Question

我有 python 3.4 的 PyQt4，但出现了这个奇怪的错误。每当我尝试调用 btn.clicked.connect() 时，Pycharm 都会抛出此错误：

Cannot find reference "connect" in "function".

例如：

btn = QtGui.QPushButton("Quit", self)
btn.clicked.connect(QtCore.QCoreApplication.instance().quit)

会抛出这个错误。如何？我有丢失的文件吗？

Answer 1

根据Events and Signals in PyQt4 - PyQt4 Tutorial - ZetCode：

PyQt4.5 introduced a new style API for working with signals and slots.
QtCore.QObject.connect(button, QtCore.SIGNAL('clicked()'),self.onClicked)
This is the old style API.
button.clicked.connect(self.onClicked)
The new style adheres more to the Python standards.

PyQt 没有button.clicked.connect 函数？

PyQt no button.clicked.connect function?

python

pyqt4