8000 gh-126615: Make `COMError` public and add to `ctypes` doc. by junkmd · Pull Request #126686 · python/cpython · GitHub
[go: up one dir, main page]
Skip to content

gh-126615: Make COMError public and add 8000 to ctypes doc. #126686

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 20 commits into from
Nov 20, 2024
Merged

gh-126615: Make COMError public and add to ctypes doc. #126686

Changes from 1 commit
Commits
Show all changes
20 commits
Select commit Hold shift + click to select a range
e70aa54
add `COMError` exception to `Doc/library/ctypes.rst`.
junkmd Nov 16, 2024
181f512
Add a mention of the difference in exceptions that can be raised.
junkmd Nov 16, 2024
857fef5
Add a dot to refer to the object within the same module.
junkmd Nov 16, 2024
90fb47f
Simplify descriptions of attributes.
junkmd Nov 16, 2024
1f9d4ee
Align with the docstring defined in the C implementation:
junkmd Nov 16, 2024
b71e310
Apply suggestions from code review
junkmd Nov 16, 2024
dafb5b2
Add the dot to make the reflink.
junkmd Nov 16, 2024
49d5e5f
Add the `availability`.
junkmd Nov 16, 2024
1fa159a
Create the "Exceptions" section.
junkmd Nov 16, 2024
934c36a
Remove the `availability` directive
junkmd Nov 16, 2024
9461642
`WindowsError` -> `OSError`
junkmd Nov 18, 2024
705ffcc
details of `details`.
junkmd Nov 18, 2024
b5a2170
Small fix.
junkmd Nov 18, 2024
a16f1e2
Make `COMError` public.
junkmd Nov 19, 2024
e2617f3
Update docs.
junkmd Nov 19, 2024
57d76c5
Update `test_COMError`.
junkmd Nov 19, 2024
36f1607
Update the NEWS.
junkmd Nov 20, 2024
068ea2a
`.. versionchanged::` -> `.. versionadded::`
junkmd Nov 20, 2024
3da9e15
Update the `prototype` section.
junkmd Nov 20, 2024
920bccc
Merge branch 'main' into gh_126615_comerror_doc
junkmd Nov 20, 2024
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
Prev Previous commit
Next Next commit
Remove the availability directive 
in order to maintain consistency with other sections.
  • Loading branch information
@junkmd
junkmd committed Nov 16, 2024
commit 934c36ae4a19069c15a66e3c3c5b45c845fecd77
5 changes: 2 additions & 3 deletions Doc/library/ctypes.rst
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -2754,7 +2754,8 @@ Exceptions

.. exception:: COMError(hresult, text, details)

This non-public exception is raised when a COM method call failed.
Windows only: This non-public exception is raised when a COM method call
failed.

.. attribute:: hresult

Expand All @@ -2767,5 +2768,3 @@ Exceptions
.. attribute:: details

The 5-tuple representing additional details about the error.
Copy link
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

That's not very helpful. Could you document what the items are?

Copy link
Contributor Author
@junkmd junkmd Nov 18, 2024 •
edited
Loading

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Based on the C implementation source code, these items are retrieved via methods of IErrorInfo1: GetDescription, GetSource, GetHelpFile, GetHelpContext, and the ProgID obtained via using ProgIDFromCLSID and GetGUID.

However, this exception can be raised not only from foreign functions but also intentionally by passing variable-length tuples, as seen in test_win32.py and the comtypes package.

cpython/Lib/test/test_ctypes/test_win32.py

Lines 67 to 76 in f9c5573

def test_COMError(self):
from _ctypes import COMError
if support.HAVE_DOCSTRINGS:
self.assertEqual(COMError.__doc__,
"Raised when a COM method call failed.")
ex = COMError(-1, "text", ("details",))
self.assertEqual(ex.hresult, -1)
self.assertEqual(ex.text, "text")
self.assertEqual(ex.details, ("details",))

I will revise this part, taking these facts into account.

Footnotes

  1. Reference: IErrorInfo implementation in comtypes. ↩

Copy link
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Since _ctypes is internal API that is subject to change, I think it would be best to change test_win32 and comtypes so that they raise the same 5-tuple as ctypes itself, and document that 5-tuple.

Copy link
Contributor Author

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

I wrote details of details.

I plan to improve test_win32 after improving this documentation.

For comtypes, I will investigate how much COMError.details is being used and then discuss the matter with the project's community to decide how to proceed.

As mentioned earlier, I would like to focus on improving the documentation in this PR.


.. availability:: Windows
Loading
0