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From: Terry Reedy <tjreedy@udel.edu>
Subject: Re: Import order question
Date: Mon, 17 Feb 2014 10:35:07 -0500
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Xref: csiph.com comp.lang.python:66607

On 2/17/2014 8:01 AM, Nagy L=C3=A1szl=C3=B3 Zsolt wrote:
> I have a class hierarchy like this:
>
> Widget <- VisualWidget <- BsWidget
>
> and then BsWidget has many descendants: Desktop, Row, Column, Navbar et=
c.
>
> Widgets can have children. They are stored in a tree. In order to manag=
e
> the order of widgets, I need methods to append children. (And later:
> insert or prepend because they also have an order). So I would like to
> have methods like this:
>
> BsWidget.AppendNavbar(....)
> BsWidget.AppendRow(...)

I would write one prepend/insert/append method that=20
prepends/inserts/appends the widget passed.

> Here is the problem: these methods should create instances of Row,
> Column and Navbar.

I disagree, without strong justification. Create the instances by=20
directly calling the classes and do with them as you want.

--=20
Terry Jan Reedy