Issue 16954: Add docstrings for ElementTree module (original) (raw)

Created on 2013-01-13 15:26 by serhiy.storchaka, last changed 2022-04-11 14:57 by admin. This issue is now closed.

Files
File name Uploaded Description Edit
issue16954.patch dlam,2013-02-17 05:22 review
issue16954-v2.patch dlam,2013-02-28 10:19
Messages (17)
msg179881 - (view) Author: Serhiy Storchaka (serhiy.storchaka) * (Python committer) Date: 2013-01-13 15:26
Perhaps almost all Doxygen comments in ElementTree module should be converted to docstrings.
msg179883 - (view) Author: Eli Bendersky (eli.bendersky) * (Python committer) Date: 2013-01-13 17:17
Definitely. And this is one of those issues where I can wholeheartedly say that patches are welcome :-) Even incremental patching will be OK (i.e. patches documenting single methods or groups of methods). Incidentally, while replacing the comment by docstring for issue #14377, I noticed an argument (default_namespace) that wasn't documented anywhere, including the ReST docs. So such a transition can have more benefits than seems on the surface.
msg180536 - (view) Author: Ezio Melotti (ezio.melotti) * (Python committer) Date: 2013-01-24 18:02
I would suggest to adapt the comments to follow PEP 257, and in particular: """ The docstring is a phrase ending in a period. It prescribes the function or method's effect as a command ("Do this", "Return that"), not as a description; e.g. don't write "Returns the pathname ...". """ Currently there are two docstrings, one for write() and one for iterparse() (recently added in #9708). Only the former uses the correct form ("Return" instead of "Returns").
msg180538 - (view) Author: Eli Bendersky (eli.bendersky) * (Python committer) Date: 2013-01-24 18:15
On Thu, Jan 24, 2013 at 10:02 AM, Ezio Melotti <report@bugs.python.org>wrote: > > Ezio Melotti added the comment: > > I would suggest to adapt the comments to follow PEP 257, and in particular: > """ > The docstring is a phrase ending in a period. It prescribes the function > or method's effect as a command ("Do this", "Return that"), not as a > description; e.g. don't write "Returns the pathname ...". > """ > > Currently there are two docstrings, one for write() and one for > iterparse() (recently added in #9708). Only the former uses the correct > form ("Return" instead of "Returns"). > Actually, the latter was copy-pasted from the ReST docs of the method. Does that PEP 257 suggestion apply to ReST docs as well, or do we have a discrepancy?
msg180540 - (view) Author: Ezio Melotti (ezio.melotti) * (Python committer) Date: 2013-01-24 18:19
The docs should use "return" too, even though I'm not sure this is enforced. Consistency within the doc page is more important, but I don't think that consistency between comments and docstrings in the code or between docstrings and documentation is so important.
msg180544 - (view) Author: David Lam (dlam) * Date: 2013-01-24 19:39
I had an innocent question about the format to use when listing function arguments in docstrings. In the PEP 257 doc, there's a single example: def complex(real=0.0, imag=0.0): """Form a complex number. Keyword arguments: real -- the real part (default 0.0) imag -- the imaginary part (default 0.0) I went digging through Lib/ for a good example to follow, but felt a little unsure because the exact format seemed to differ ever so slightly sometimes. Like in ipaddress.py, a colon is used instead of two hyphens, and it's indented: def ip_address(address): """Take an IP string/int and return an object of the correct type. Args: address: A string or integer, the IP address. Either IPv4 or IPv6 addresses may be supplied; integers less than 2**32 will be considered to be IPv4 by default. Is there an "ideal" example in the source to try to copy? (or maybe this is just a use-your-common-sense thing)
msg180545 - (view) Author: Ezio Melotti (ezio.melotti) * (Python committer) Date: 2013-01-24 19:43
> (or maybe this is just a use-your-common-sense thing) That's probably the best thing. I don't think we follow any specific convention for args in the docstring. Mostly they are just described in the text, without having lists of args.
msg182261 - (view) Author: David Lam (dlam) * Date: 2013-02-17 05:22
Here's a patch which converts all the Doxygen comments in ElementTree.py to docstrings! Something I noticed was that the from _elementtree import * ...at the bottom of ElementTree.py sort of overwrites the docstrings of the Python module. So if you did... `from xml.etree import ElementTree; help(ElementTree)` from the interpreter, you'll see blank spots for a bunch of classes/methods like Element, ParseError, SubElement etc etc maybe docstrings should be also added in Modules/_elementtree.c? perhaps that would be too much copy and pastage, hmmm
msg182542 - (view) Author: Ezio Melotti (ezio.melotti) * (Python committer) Date: 2013-02-20 18:58
I left a few comments on rietveld. In the rst docs the markup used for arguments is *arg*, and this is sometimes reflected in docstrings too. We might want to do this here too, instead of using 'arg' (using 'attr' for attributes it's fine though). > maybe docstrings should be also added in Modules/_elementtree.c? Maybe we could have a loop that does something like cfunc.__doc__ = pyfunc.__doc__?
msg183210 - (view) Author: David Lam (dlam) * Date: 2013-02-28 10:19
here's an updated patch incorporating the feedback from Ezio and Eric: - moved docstrings put in some __special__ method names - made the description of 'tag' consistent: 'tag' means the elements name (as opposed to 'tag' being a synonym for "element"!) - docstring args now *stared* as opposed to 'quoted' I also gave a shot at copying the existing docstrings into their respective C counterparts. But it *seems* like you can't do so that easily for a C extension. Maybe I missed something though: >>> from _elementtree import Element as cElement >>> cElement.__doc__ = 'foobarbaz' Traceback (most recent call last): File "", line 1, in TypeError: can't set attributes of built-in/extension type 'xml.etree.ElementTree.Element' I see one example in Modules/_json.c where the docstrings were sorta copied and pasted over, so perhaps it's an ok thing to do.
msg183824 - (view) Author: Eli Bendersky (eli.bendersky) * (Python committer) Date: 2013-03-09 15:13
Thanks David, the patch looks good. I will commit it with some slight modifications and touch-ups shortly. The issue of C extension docstrings vs. Python docstrings is an interesting one. It's a shame that help() shows empty strings, and it's a shame to copy-paste. What do other modules do? It may also be worth asking in python-dev or the docs mailing list and hear suggestions from other developers.
msg183825 - (view) Author: Roundup Robot (python-dev) (Python triager) Date: 2013-03-09 15:13
New changeset f27d7c1eac4d by Eli Bendersky in branch 'default': Issue #16954: Add docstrings for ElementTree http://hg.python.org/cpython/rev/f27d7c1eac4d
msg186691 - (view) Author: Eli Bendersky (eli.bendersky) * (Python committer) Date: 2013-04-13 03:19
David, would you like to pursue this further (figuring out how to make docstrings show in help() without duplicating?)
msg186948 - (view) Author: David Lam (dlam) * Date: 2013-04-14 19:37
Hi Eli, I sure would! (Though, if anyone finds this issue and can figure out a solution, I'd encourage them to post it!)
msg186957 - (view) Author: Eli Bendersky (eli.bendersky) * (Python committer) Date: 2013-04-14 21:47
You can ask on the python-dev mailing list. It's possible that other Python developers ran into a similar issue.
msg370027 - (view) Author: Chitrank-Dixit (Chitrank-Dixit) * Date: 2020-05-26 19:43
I would like to work on this issue, I found this open and needs a patch.
msg370411 - (view) Author: Chitrank-Dixit (Chitrank-Dixit) * Date: 2020-05-31 04:23
I think the current ticket should be closed as there are no doxygen comments left to convert to docstrings. So I think this issue can be closed. There are places where there is no docstrings for those we can create a new ticket.
History
Date User Action Args
2022-04-11 14:57:40 admin set github: 61158
2021-02-21 18:10:31 nascheme set status: open -> closedresolution: fixedstage: needs patch -> resolved
2020-05-31 04:23:35 Chitrank-Dixit set messages: +
2020-05-26 19:43:57 Chitrank-Dixit set nosy: + Chitrank-Dixitmessages: +
2019-04-04 10:00:05 serhiy.storchaka set stage: patch review -> needs patchversions: + Python 3.7, Python 3.8, - Python 3.4
2015-05-04 12:51:40 serhiy.storchaka unlink issue20159 dependencies
2014-01-09 09:34:36 serhiy.storchaka link issue20159 dependencies
2013-04-14 21:47:17 eli.bendersky set messages: +
2013-04-14 19:37:37 dlam set messages: +
2013-04-13 03:19:56 eli.bendersky set messages: +
2013-03-09 15:13:43 python-dev set nosy: + python-devmessages: +
2013-03-09 15:13:10 eli.bendersky set messages: +
2013-02-28 10:19:55 dlam set files: + issue16954-v2.patchmessages: +
2013-02-20 18:58:57 ezio.melotti set messages: + stage: needs patch -> patch review
2013-02-17 05:22:32 dlam set files: + issue16954.patchkeywords: + patchmessages: +
2013-01-24 19:43:15 ezio.melotti set messages: +
2013-01-24 19:39:27 dlam set messages: +
2013-01-24 18:19:14 ezio.melotti set messages: +
2013-01-24 18:15:11 eli.bendersky set messages: +
2013-01-24 18:02:10 ezio.melotti set messages: +
2013-01-18 18:56:34 tshepang set nosy: + tshepang
2013-01-15 10:21:28 serhiy.storchaka set assignee: serhiy.storchaka -> docs@python
2013-01-15 04:34:57 dlam set nosy: + dlam
2013-01-14 11:09:56 serhiy.storchaka set assignee: docs@python -> serhiy.storchaka
2013-01-14 02:17:44 ezio.melotti set nosy: + ezio.melotti
2013-01-13 17:17:03 eli.bendersky set keywords: + easymessages: +
2013-01-13 15:26:53 serhiy.storchaka create