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Created on 2020-01-20 09:27 by plimkilde, last changed 2022-04-11 14:59 by admin. This issue is now closed.
| Pull Requests | |||
|---|---|---|---|
| URL | Status | Linked | Edit |
| PR 18093 | merged | ZackerySpytz, 2020-01-21 06:44 | |
| PR 18230 | merged | miss-islington, 2020-01-28 09:42 | |
| Messages (5) | |||
|---|---|---|---|
| msg360305 - (view) | Author: (plimkilde) | Date: 2020-01-20 09:27 | |
Under Windows with Python 3.8+, trying to load a DLL whose dependencies cannot be resolved may produce a misleading error message. For example, if we are trying to load a library foo.dll that depends on bar.dll, and bar.dll cannot be resolved while foo.dll itself can, Python gives this error message: "FileNotFoundError: Could not find module 'foo.dll'. Try using the full path with constructor syntax." (behavior introduced with PR #12302) Personally, I'd be happy to see a fix that simply adds " (or one of its dependencies)" to the error message. |
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| msg360323 - (view) | Author: Eryk Sun (eryksun) *  |
Date: 2020-01-20 16:20 | |
That clarification seems okay to me. The error message is in load_library in Modules/_ctypes/callproc.c. The underlying problem is that the directory of the DLL is only added to the search path (in CDLL.__init__ in Lib/ctypes/__init__.py) if the caller uses a qualified path. This is an OS limit that we can't avoid. Also note that the suggestion to use a qualified path won't necessarily resolve the problem, in which case scripts will have to use os.add_dll_directory, and find a reliable way to identify the required directories. |
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| msg360848 - (view) | Author: Steve Dower (steve.dower) *  |
Date: 2020-01-28 09:42 | |
New changeset 13c1c3556f2c12d0be2af890fabfbf44280b845c by Steve Dower (Zackery Spytz) in branch 'master': bpo-39393: Misleading error message on dependent DLL resolution failure (GH-18093) https://github.com/python/cpython/commit/13c1c3556f2c12d0be2af890fabfbf44280b845c |
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| msg360851 - (view) | Author: Steve Dower (steve.dower) * |
Date: 2020-01-28 09:58 | |
Thanks, Zackery! |
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| msg360855 - (view) | Author: miss-islington (miss-islington) | Date: 2020-01-28 10:00 | |
New changeset 46735c7e101753769e31c69a36d0030bb056a162 by Miss Islington (bot) in branch '3.8': bpo-39393: Misleading error message on dependent DLL resolution failure (GH-18093) https://github.com/python/cpython/commit/46735c7e101753769e31c69a36d0030bb056a162 |
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| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:59:25 | admin | set | github: 83574 |
| 2020-05-13 00:02:46 | eryksun | link | issue40610 superseder |
| 2020-01-28 10:00:20 | miss-islington | set | nosy:
+ miss-islington messages: + msg360855 |
| 2020-01-28 09:58:31 | steve.dower | set | status: open -> closed resolution: fixed messages: + msg360851 stage: patch review -> resolved |
| 2020-01-28 09:42:55 | miss-islington | set | pull_requests: + pull_request17610 |
| 2020-01-28 09:42:46 | steve.dower | set | messages: + msg360848 |
| 2020-01-21 06:44:42 | ZackerySpytz | set | keywords:
+ patch stage: needs patch -> patch review pull_requests: + pull_request17483 |
| 2020-01-20 16:20:30 | eryksun | set | nosy:
+ eryksun messages: + msg360323 components: + Extension Modules keywords: + easy (C) stage: needs patch |
| 2020-01-20 09:27:30 | plimkilde | create | |