[Tutor] Really basic won't run error

[dn]

On 04/07/2021 19.17, Phil wrote:
> I've been working on this idea for most of the day and have finally
> reduced the problem to a wxPython demo example but it won't run. No
> doubt the reason is obvious but I cannot see it.
> 
> import wx
> 
> class ImagePanel(wx.Panel):
>     def __init__(self, parent):
>         wx.Panel.__init__(self, parent, -1)#None, title="Bitmap test")
> 
>         wx.StaticText(self, -1, "This is a wx.StaticBitmap.", (45, 15))
> 
>         bmp = 'test.jpg'.GetBitmap()
>         #mask = wx.Mask(bmp, wx.BLUE)
>         #bmp.SetMask(mask)
>         #StaticBitmap(self, -1, bmp, (80, 50), (bmp.GetWidth(),
> bmp.GetHeight()))
> 
>         StaticBitmap(self, -1, bmp, (80, 150))
> 
> if __name__ == "__main__":
>     app = wx.App()
>     frame = ImagePanel().Show()
>     app.MainLoop()
> 
> Traceback (most recent call last):
>   File "/usr/lib/python3.8/idlelib/run.py", line 559, in runcode
>     exec(code, self.locals)
>   File "/home/phil/Python/wxpython_bitmap.py", line 38, in <module>
>     frame = MyFrame().Show()
> TypeError: __init__() missing 1 required positional argument: 'parent'

Reading the err.msgs we are first pointed to "line 38" which attempts to
first "instantiate" and then "Show" an "ImagePanel", with the comment
that a "positional argument" is missing (omitted).

Previously in the code, class ImagePanel is defined. Its __init__()
declares a "parent" parameter. This is missing from line 38.

It has been a while since I played with wxPython. Should the "app"
object, instantiated on line 37, be provided as an argument to ImagePanel?
-- 
Regards,
=dn