[issue12511] class/instance xyz has no attribute '_abc'

[Andreas Hasenkopf]

New submission from Andreas Hasenkopf <webmaster at hasenkopf2000.net>:

I'm using 64bit Arch Linux and Python 2.7.2 compiled with GCC 4.6.1.

I have noticed in several ocassions that the interpreter is complaining about

AttributeError: XMLGenerator instance has no attribute '_write' (in case of module xml.sax.saxutils.XMLGenerator)

or

AttributeError: RendererGDK instance has no attribute '_text2path' (in case of matplotlib when trying to use TeX formatting of text)

When I have a look into the corresponding modules I can clearly see method definitions (e.g. def _write(self, text) in line 97 of xml/sax/saxutils.py

I have no clue, why it is happening in some modules, but not in others. If a write my own module containing a class with a _write method it is working fine.
If I write a class derived from xml.sax.saxutils.XMLGenerator and overwrite the _write method it is known to the system, but many of the attributes beginning with an underscore appear still to be unknown...

This is very odd?!

----------
components: XML
messages: 139966
nosy: Andreas.Hasenkopf
priority: normal
severity: normal
status: open
title: class/instance xyz has no attribute '_abc'
versions: Python 2.7

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue12511>
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