Silvan Jegen added the comment:
The situation is as follows.
According to the online documentation of Python 2.7 the
xml.etree.ElementTree.iterparse() function takes up to three arguments, two of
them named ones:
xml.etree.ElementTree.iterparse(source, events=None, parser=None)
In the C implementation of the function however, the "parser" argument does not
seem to be supported:
>>> import xml.etree.ElementTree as ET
>>> import xml.etree.cElementTree as ETc # C version of the library
>>> result = ET.iterparse("xmltest.xml", None, ET.XMLParser()) # Works
>>>
>>> result = ETc.iterparse("xmltest.xml", None, ET.XMLParser()) # C version
does'nt
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: __init__() takes at most 3 arguments (4 given)
The documentation does not mention the C version of the function not taking the
"parser" argument as far as I know.
Additionally, the xml.etree.ElementTree.iterparse() online documentation
for Python 3.3 mentions the "parser" argument as well. When using this
argument however, Python throws an error:
Python 3.3.0 (default, Dec 22 2012, 21:02:07)
[GCC 4.7.2] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import xml.etree.ElementTree as ET
>>> ET.iterparse("xmltest.xml", None, ET.XMLParser())
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: __init__() takes from 2 to 3 positional arguments but 4 were
given
A look at the pydoc output for xml.etree.ElementTree actually does not mention
a named "parser" argument to iterparse() at all (Please note that iterparse
seems to be a constructor in Python 3.3):
class iterparse(builtins.object)
| Methods defined here:
|
| __init__(self, file, events=None)
In these cases either the implementation or the documentation should be
changed.
Please feel free to ask away if you have more questions.
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue9708>
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