[PyQt] Empty string converted to 0.0 using pyqtSlot

[Alexander Rössler]

Because "" is falsy and converted to Double 0.0 in JS. If you set for example "1" it probably also will work, since JS knows how to convert it to a number.

On Sep 17 2018, at 8:44 pm, Kálmán Viktor <viktorvector at gmail.com> wrote:
>
> Hello,
>
> this code produces the following output
>
> Python snippet
> @pyqtSlot(float)
> def xy(self, amount):
>
> print("am", amount)
>
>
> QML snippet
> print(amountInput.text, amountInput.text === "")
> controller.xy(amountInput.text)
>
>
> Output
> qml: true
> am 0.0
>
>
> Is this intentional? If I use any other string than "" I get (I think the correct) nan. I'm using PyQt5==5.11.2
>
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