Package conflicting with itself?

To: "debian-mentors@lists.debian.org" <debian-mentors@lists.debian.org>
Subject: Package conflicting with itself?
From: Arturo Borrero Gonzalez <arturo.borrero.glez@gmail.com>
Date: Tue, 21 Oct 2014 18:54:29 +0200
Message-id: <[🔎] CAOkSjBjSd11vnG5HHJSqu2pu4RicWhjjfiwR_mgqGV=SR+MQsA@mail.gmail.com>

Hi,

Does it makes sense for a package to conflict with itself?

$ aptitude show python3-postgresql
Package: python3-postgresql
New: yes
State: installed
Automatically installed: no
Version: 1.0.2-1+b1
Priority: optional
Section: python
Maintainer: William Grzybowski <william@agencialivre.com.br>
Architecture: amd64
Uncompressed Size: 2118 k
Depends: python3 (>= 3.2), python3 (< 3.3), libc6 (>= 2.2.5), libjs-jquery
Conflicts: python3-postgresql
Description: pgsql driver, cluster management tools, and client tools

Homepage: http://python.projects.postgresql.org/

-- 
Arturo Borrero González

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