Changes by Berker Peksag berker.pek...@gmail.com:
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resolution: fixed - wont fix
stage: patch review - resolved
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Python tracker rep...@bugs.python.org
http://bugs.python.org/issue5876
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Armin Rigo added the comment:
@Serhiy: it's a behavior change and as such not an option for a micro release.
For example, the following legal code would behave differently: it would
compute s = '\\u1234' instead of s = 'UTF8:\xe1\x88\xb4'.
try:
s = repr(x)
except
Serhiy Storchaka added the comment:
In Python 3 ascii() uses the backslashreplace error handler.
class T:
... def __repr__(self):
... return '\u20ac\udcff'
...
print(ascii(T()))
\u20ac\udcff
I think using the backslashreplace error handler in repr() in Python 2.7 is
good
STINNER Victor added the comment:
This change is going to break backward compatibility. I don't think
that it can be done in Python 2.7.x, and there is no Python 2.8 (PEP
404).
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Python tracker rep...@bugs.python.org
Serhiy Storchaka added the comment:
How it can break backward compatibility? Currently repr() just raises
UnicodeEncodeError.
UnicodeEncodeError: 'ascii' codec can't encode character u'\u20ac' in position
0: ordinal not in range(128)
With patch it always returns 8-bit string. As far as
STINNER Victor added the comment:
How it can break backward compatibility? Currently repr() just raises
UnicodeEncodeError.
It depends on sys.getdefaultencoding() which can be modified in the site module
(or in a PYTHONSTARTUP script) using sys.setdefaultencoding(). It should not
possible
Armin Rigo added the comment:
@Serhiy: it would certainly break a program that tries to call the repr() and
catches the UnicodeEncodeError to do something else, like encode the data
differently.
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Python tracker rep...@bugs.python.org
Marc-Andre Lemburg added the comment:
.__repr__() is not really allowed to return Unicode objects in Python 2.x. If
you do this, you're on your own. The CPython internals try to convert any
non-str object to a str object, but this is only done to assure that
PyObject_Repr() always returns a
STINNER Victor added the comment:
I'd suggest closing this as won't fix.
Agreed, it's time to upgrade to Python 3!
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resolution: - fixed
status: open - closed
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Python tracker rep...@bugs.python.org
http://bugs.python.org/issue5876
Serhiy Storchaka added the comment:
It depends on sys.getdefaultencoding() which can be modified in the site
module (or in a PYTHONSTARTUP script) using sys.setdefaultencoding().
Of course. Every successful without patch repr() will left same with patch.
However the patch allows you to see
Marc-Andre Lemburg added the comment:
Serhiy Storchaka wrote:
.__repr__() is not really allowed to return Unicode objects in Python 2.x.
If you do this, you're on your own.
PyObject_Repr() contains a code which converts unicode to str and raise an
exception if __repr__() result is not
Armin Rigo ar...@users.sourceforge.net added the comment:
A __repr__() that returns unicode can, in CPython 2.7 be used in %s % x or
in u%s % x --- both expressions then return a unicode without doing any
encoding --- but it cannot be used anywhere else, e.g. in %r % x or in
repr(x).
Éric Araujo mer...@netwok.org added the comment:
I think it’s not an implicit vs. explicit call problem, rather repr vs. str.
IIRC, in 2.x it is allowed that __str__ returns a unicode object, and str will
convert it to a str. To do that, it will use the default encoding, which is
ASCII in
STINNER Victor victor.stin...@haypocalc.com added the comment:
I think that this issue is a duplicate of #4947 which has been fixed in Python
2.7.1. Can you retry with Python 2.7.2 (or 2.7.1)?
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nosy: +haypo
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Python tracker
Tomasz Melcer li...@o2.pl added the comment:
Debian SID. No, it wasn't.
Python 2.7.2+ (default, Aug 16 2011, 09:23:59)
[GCC 4.6.1] on linux2
Type help, copyright, credits or license for more information.
class T(object):
... def __repr__(self): return u'あみご'
...
T().__repr__()
STINNER Victor victor.stin...@haypocalc.com added the comment:
Debian SID. No, it wasn't.
Oh ok, gotcha: repr() always returns a str string. If obj.__repr__() returns a
Unicode string, the string is encoded to the default encoding. By default, the
default encoding is ASCII.
$ ./python -S
Changes by Nam Nguyen bits...@gmail.com:
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nosy: +Nam.Nguyen
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Python tracker rep...@bugs.python.org
http://bugs.python.org/issue5876
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Python-bugs-list mailing
New submission from Tomasz Melcer li...@o2.pl:
Invitation... (Debian Sid, gnome-terminal with pl_PL.UTF8 locales)
Python 2.5.4 (r254:67916, Feb 17 2009, 20:16:45)
[GCC 4.3.3] on linux2
Type help, copyright, credits or license for more information.
Lets create some class...
class T(object):
Changes by Ezio Melotti ezio.melo...@gmail.com:
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nosy: +ezio.melotti
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http://bugs.python.org/issue5876
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R. David Murray rdmur...@bitdance.com added the comment:
This worked in 2.4 and stopped working in 2.5.
It's not a problem in 3.x.
(2.5 is in security-fix-only mode, so I'm removing it from versions).
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components: +Interpreter Core -Extension Modules
nosy: +r.david.murray
priority:
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