CODEWITHSUNDEEP
python-3.xpyqt5
camaro
camaro

Reputation: 128

Python3, pyqt5: NoneType error when setting value in radioButton connect

I have three radioButtons, which shall select preselect time intervals 1s 10s and any. I created the following connects, but I get the error message that argument 1 has unexpected type 'NoneType'

self.radioButton_1s.clicked.connect(self.setInterval(1))
self.radioButton_10s.clicked.connect(self.setInterval(10))
self.radioButton_any.clicked.connect(self.setInterval(0))

Doing an int-cast like self.setInterval(int(1)) doesn't make a difference.

The called method is the following. I know that the math isn't tight, but thats not the problem. Normaly the doubleSpinBox reads values like 0.25 0.1 or similar.

@QtCore.pyqtSlot()
def setInterval(self,i):

    if i == 1:
        n = 1/self.doubleSpinBox_TimeIndexStep.value() #TODO: use math.floor/ceiling to geht integers
        self.spinBox_CopyInterval.setEnabled
        self.spinBox_CopyInterval.setValue(n)
    elif i == 10:
        n = 10/self.doubleSpinBox_TimeIndexStep.value()
        self.spinBox_CopyInterval.setEnabled
        self.spinBox_CopyInterval.setValue(n)

What do I have to change to set the value right?

Upvotes: 2

Views: 1555

Answers (1)

Kevin
Kevin

Reputation: 76194

connect looks to me like your typical callback registration function. It expects to get a function or callable, but you're passing in the return value of setInterval, which is None.

If you want the radio button to call setInterval when it is selected, you need to create a function which will call setInterval, and pass that as the argument to connect instead. The shortest way to do that is with a lambda.

self.radioButton_1s.clicked.connect(lambda *args: self.setInterval(1))

Upvotes: 4

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