MemoryError with parser.suite and wrong encoding declaration

[Sylvain Thenault]

Hi there !
I've noticed the following problem with python >= 2.3 (actually 2.3.4 and
2.4):

syt@musca:test$ python
Python 2.3.4 (#2, Sep 24 2004, 08:39:09)
[GCC 3.3.4 (Debian 1:3.3.4-12)] on linux2
Type "help", "copyright" , "credits" or "license" for more information.[color=blue][color=green][color=darkred]
>>> import parser
>>> parser.suite('# -*- coding: IBO-8859-1 -*-')[/color][/color][/color]
Traceback (most recent call last):
File "<stdin>", line 1, in ?
MemoryError[color=blue][color=green][color=darkred]
>>> parser.suite('# -*- coding: ISO-8859-1 -*-')[/color][/color][/color]
<parser.st object at 0xb7e5e060>

Shouldn't parser.suite just ignore the wrong encoding declaration, or at
least raise a more appropriate exception. IMHO the first solution
would be better, since that's the behaviour of the (C) python interpreter.

--
Sylvain Thénault LOGILAB, Paris (France).

http://www.logilab.com http://www.logilab.fr http://www.logilab.org

[Thomas Heller]

Re: MemoryError with parser.suite and wrong encoding declaration

Sylvain Thenault <sylvain.thenau lt@nospam.logil ab.fr> writes:
[color=blue]
> Hi there !
> I've noticed the following problem with python >= 2.3 (actually 2.3.4 and
> 2.4):
>
> syt@musca:test$ python
> Python 2.3.4 (#2, Sep 24 2004, 08:39:09)
> [GCC 3.3.4 (Debian 1:3.3.4-12)] on linux2
> Type "help", "copyright" , "credits" or "license" for more information.[color=green][color=darkred]
>>>> import parser
>>>> parser.suite('# -*- coding: IBO-8859-1 -*-')[/color][/color]
> Traceback (most recent call last):
> File "<stdin>", line 1, in ?
> MemoryError[color=green][color=darkred]
>>>> parser.suite('# -*- coding: ISO-8859-1 -*-')[/color][/color]
> <parser.st object at 0xb7e5e060>
>
> Shouldn't parser.suite just ignore the wrong encoding declaration, or at
> least raise a more appropriate exception. IMHO the first solution
> would be better, since that's the behaviour of the (C) python interpreter.[/color]

Ignore the wrong declaration? All Python's that I have (on windows,
at least) raise a SyntaxError:

File "x.py", line 1
SyntaxError: 'unknown encoding: IBO-8859-1'

See also:

http://www.python.org/sf/979739

Thomas

[Sylvain Thenault]

Re: MemoryError with parser.suite and wrong encoding declaration

On Tue, 18 Jan 2005 16:16:32 +0100, Thomas Heller wrote:
[color=blue]
> Sylvain Thenault <sylvain.thenau lt@nospam.logil ab.fr> writes:
>[color=green]
>> Hi there !
>> I've noticed the following problem with python >= 2.3 (actually 2.3.4
>> and 2.4):
>>
>> syt@musca:test$ python
>> Python 2.3.4 (#2, Sep 24 2004, 08:39:09) [GCC 3.3.4 (Debian 1:3.3.4-12)]
>> on linux2 Type "help", "copyright" , "credits" or "license" for more
>> information.[color=darkred]
>>>>> import parser
>>>>> parser.suite('# -*- coding: IBO-8859-1 -*-')[/color]
>> Traceback (most recent call last):
>> File "<stdin>", line 1, in ?
>> MemoryError[color=darkred]
>>>>> parser.suite('# -*- coding: ISO-8859-1 -*-')[/color]
>> <parser.st object at 0xb7e5e060>
>>
>> Shouldn't parser.suite just ignore the wrong encoding declaration, or at
>> least raise a more appropriate exception. IMHO the first solution would
>> be better, since that's the behaviour of the (C) python interpreter.[/color]
>
> Ignore the wrong declaration? All Python's that I have (on windows, at
> least) raise a SyntaxError:
>
> File "x.py", line 1
> SyntaxError: 'unknown encoding: IBO-8859-1'[/color]

hum, right (with python >= 2.3 which is the first release using those
declaration...) . I was sure to have checked this but I've obviously
missed something. Maybe the fact that being able to parse it anyway is
the solution I wish has driven me to write this ;) I would like this
behaviour so that pylint can check a module with a wrong encoding
declaration anyway. But at least, SyntaxError would be better than
MemoryError.
[color=blue]
> See also:
>
> http://www.python.org/sf/979739[/color]

thanks
--
Sylvain Thénault LOGILAB, Paris (France).

http://www.logilab.com http://www.logilab.fr http://www.logilab.org