[Tutor] OOP clarification needed
jf_byrnes at comcast.net
Tue Jun 1 22:19:17 CEST 2010
Whenever I teach myself a new language I have great difficulty
understanding the nuts and bolts of it's OO implementation. Compared to
some older procedural languages I always end up becoming confused by the
large number of built in methods. When reading through code examples I
many times get hung up on trying to figure out just where some methods
Case in point is this code snippet from a chapter on Tkinter.
def viewer(imgdir, kind=Toplevel, cols=None):
make thumb links window for an image directory:
one thumb button per image; use kind=Tk to show
in main app window, or Frame container (pack);
imgfile differs per loop: must save with a default;
photoimage objs must be saved: erased if reclaimed;
win = kind()
win.title('Viewer: ' + imgdir)
thumbs = makeThumbs(imgdir)
What is the relationship between kind=Toplevel in the first line and
win=kind() further down. Isn't "kind" a variable and "kind()" a method?
I've probable overlooked something fundamental but a explanation
would be appreciated.
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