TypeError: object.__init__() takes exactly one argument (the instance to initialize)

Question

I am trying to make a form app and I don t understand the error:

TypeError: object.__init__() takes exactly one argument (the instance to initialize)
         


        

Answer 1

OK, so the error is actually not in your super(Grid1,self).__init__(**kwargs) statement, it's in the creation of the Submit button. You did:

self.submit = Button(text="Submit", font=40)
self.add_widget(self.submit)

But as the docs say, the font size is set by font_size and not font. The code should be:

self.submit = Button(text="Submit", font_size=40)
self.add_widget(self.submit)

This should work just fine.

Edit

Just want to thank @chepner for pointing this out:

Note that the issue, then, is that font, not being recognized by Button (or anyone else), is simply passed on up the chain until it is ultimately passed to object.__init__ (which raises an error instead of simply ignoring unexpected arguments).