Simple Class Question - need clarity please

[Stevie_mac]

OK, 1st off, I'm brand new to python so all help is appreciated. Right...

Lets say I want a class called Window.  It will have some functions namely DoModal()
Now this class is inherited in MyClass
What is wrong with this?...

import win32con, win32ui
from pywin.mfc import dialog #, window
class Window:
    def MakeDlgTemplate(self):
        style = win32con.DS_MODALFRAME | win32con.WS_POPUP | win32con.WS_VISIBLE | win32con.WS_CAPTION |
win32con.WS_SYSMENU | win32con.DS_SETFONT
        dlg = [ ["My Dialog", (0, 0, 100, 100), style, None, (8, "MS Sans Serif")], ]
        s = win32con.BS_PUSHBUTTON | win32con.WS_CHILD | win32con.WS_VISIBLE
        dlg.append([128, "Cancel", win32con.IDCANCEL, (55, 80, 40, 16), s])
        return dlg
    def DoModal(self):
        mw = win32ui.CreateDialogIndirect( self.MakeDlgTemplate() )
        mw.DoModal()

w = Window()
w.DoModal()

 ^ ^ ^ This Works ^ ^ ^
but if I disable w = Window() & w.DoModal() and derive from this class . . .

# file test.py #
import mywindow
class MyClass(mywindow.Window):
    def Show(self):
        self.DoModal()

t = MyClass()
t.Show()

. . . I get
NameError: global name 'MakeDlgTemplate' is not defined  ???

another 1 I managed to clear up was . . .
TypeError: Show() takes no arguments (1 given)
. . . until I added 'self' to the Show function  ???


I really am struggling with this - some real clarity is needed - can anyone explain the rules (I've read stuff &
dissected samples, but I still struggle when it comes to this.  If someone can clear this up for me, I should be flying
as I am familiar with the concepts of OOP)

I'm also struggling with other things like...
Where do I save .py files?
Will 'import' find my files where ever they are? (obviously not but...)
What basic should be considerations when deriving classes?

any help will be greatly appreciated - Ta Stevie_Mac