difference between __repr__() and __str__()

[Emile van Sebille]

I like that eval(repr(obj)) stay true.  On that basis, the repr(obj)
should create a string such that obj == eval(repr(obj)).

Emile van Sebille
emile at fenx.com
-------------------


----- Original Message -----
From: Gregoire Welraeds <greg at perceval.be>
To: <python-list at python.org>
Sent: Monday, February 28, 2000 9:33 AM
Subject: difference between __repr__() and __str__()


> The question is in the subject. According to the Python reference
manual,
> page 17
>
> __repr__: called to compute the official string representation of an
> object. This should like a valid Python expression that can be used to
> recreate an object with the same value.
>
> __str__: differs from repr in that in does not have to be a valid
python
> expression: a more conveniant or concise representation maybe used
> instead.
>
> What is a valid Python expression ?
> I though that repr was called by repr and by string conversion (as
> mentionned early in the doc)not to recreate an object ?
> What is the use of an official string representation against the
> non-official ?
>
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> Gregoire Welraeds
> greg at perceval.be
> Perceval Development team
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