best way to create warning for obsolete functions and call new one

[Dan Sommers]

On Mon, 26 Mar 2012 22:26:11 +0200
Gelonida N <gelonida at gmail.com> wrote:

> As these modules are used by quite some projects and as I do not want
> to force everybody to rename immediately I just want to warn users,
> that they call functions, that have been renamed and that will be
> obsoleted.

You want a  DeprecationWarning.

HTH,
Dan