From: | Jacob Kaplan-Moss <jacob(at)jacobian(dot)org> |
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To: | psycopg(at)postgresql(dot)org |
Subject: | Re: Range type adaptation implemented |
Date: | 2012-09-24 17:36:27 |
Message-ID: | CAK8PqJFPruSzKXPjsntw5XziWGKp5XtmFSc9J6TVcg_1z3LRBQ@mail.gmail.com |
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Lists: | psycopg |
On Mon, Sep 24, 2012 at 11:44 AM, Daniele Varrazzo
<daniele(dot)varrazzo(at)gmail(dot)com> wrote:
> We could return False to any comparison but still it's not like "you
> cannot do that, mate". Anybody knows an example of unorderable object
> in Python? Is there anything more appropriate than throwing TypeError?
I'd say take a cue from how Python 3 handles trying to compare disparate types:
$ python3
Python 3.2.2 (default, Feb 23 2012, 12:57:05)
[GCC 4.2.1 Compatible Apple Clang 3.1 (tags/Apple/clang-318.0.45)] on darwin
>>> {} < []
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: unorderable types: dict() < list()
So I'd say TypeError is correct, perhaps with a message like
"unorderable type: range()" or something.
Jacob
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