Error - __init__() takes exactly 2 arguments (1 given)

Question

I'm trying to initialize the class (extraropt) from another .py but it gives me an error, I've searched but I haven't found a solution.

Heres the code of the one py I'm calling from:

main.py:

class GameWindow(ui.ScriptWindow):
    def __init__(self, stream):
        import extraop

        exec 'extraop.extraropt().Show(stream)'

And here's the code of the one py I'm trying to call(init and del only):

extraop.py

class extraropt(ui.Window):
    def __init__(self, stream):
        ui.Window.__init__(self)
        self.BuildWindow()
        self.stream=stream
    def __del__(self):
        ui.Window.__del__(self)

It gives this error:

Error - __init__() takes exactly 2 arguments (1 given)

Answer 1

In the line

exec 'extraop.extraropt().Show(stream)'

You are implicitly calling extraropt.__init__() by creating a new instance of extraopt . In your code, you show that extraropt.__init__() takes a second ( stream ) argument, so you have to pass that in.

extraop.extraropt(stream).Show()

Incidentally, there is no reason why you should be doing an exec rather than explicitly calling it as I did above. There is also no reason for you to have a __del__() method defined as you only call the parent __del__() method anyway.

Answer 2

您需要以这种方式初始化父级：

super(extraropt, self).__init__(stream)

Answer 3

行exec 'extraop.extraropt().Show(stream)'的stream变量应该传递给extraropt类的构造函数，如下所示：

exec 'extraop.extraropt(stream).Show()'