hello world in wxPython gets no reaction at all, no frame, no return **SOLVED**
Question: First foray into python GUI and I'm using thenewboston tutorial. First lesson
with a basic frame, I get an error that wx.PySimpleApp() is depreciated and I
follow the instructions here to change it to wx.App(False). No errors come up,
but also no frame. Here is the code:

    
    
    #!/usr/bin/env python
    
    import wx
    
    class duckie(wx.Frame):
    
        def __init__(self,parent,id):
            wx.Frame.__init__(self,parent,id, 'Frame aka window', size = (300, 200))
    
    if __name__=='__main__':
        app=wx.App(False)
        frame=duckie(parent=None,id=-1)
        frame.Show()
        app.MainLoop
    

Originally I had everything spaced out (space after commas, before and after
operators, etc) but I changed it to more accurately follow the tutorial with
no difference in effect. Understandably, I'm a little upset that I can't even
get the Hello World to work here.

In case it's needed, the system is Ubuntu, everything is up to date through
pip.

For anyone else with this problem, I changed the id tag on line 10 from

    
    
    frame=duckie(parent=None, id=-1)
    

to

    
    
    frame=duckie(None, wx.ID_ANY)
    


Answer: 
    app.MainLoop
    

should be:

    
    
    app.MainLoop()
    

'-1' or wx.ID_ANY is the same, do the following on a Python prompt:

    
    
    import wx
    wx.ID_ANY
    

The little sample I would probably do like this:

    
    
    #!/usr/bin/env python
    
    import wx
    
    
    class Duckie(wx.Frame):
    
        def __init__(self, parent, *args, **kwargs):
            super(Duckie, self).__init__(parent, id=wx.ID_ANY,
                                         title='Frame aka window',
                                         size=(300, 200))
    
    if __name__ == '__main__':
        app = wx.App(False)
        frame = Duckie(None)
        frame.Show()
        app.MainLoop()
    

The above code will pass PEP 8 (<https://www.python.org/dev/peps/pep-0008/>)
checking and will also have no errors when one uses e.g. PyLint to check ones
code.

