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Created on 2016-02-10 22:55 by jstasiak, last changed 2022-04-11 14:58 by admin. This issue is now closed.
| Files | ||||
|---|---|---|---|---|
| File name | Uploaded | Description | Edit | |
| mmap_write_return_count.patch | jstasiak, 2016-02-10 22:55 | review | ||
| mmap_write_return_count2.patch | jstasiak, 2016-02-23 23:39 | review | ||
| mmap_write_return_count3.patch | jstasiak, 2016-02-25 10:05 | |||
| Messages (8) | |||
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| msg260053 - (view) | Author: Jakub Stasiak (jstasiak) * | Date: 2016-02-10 22:55 | |
Since mmap objects are said to "behave like both bytearray and like file objects" I believe it's appropriate for the mmap.write() method to return the number of bytes written like write() of other file objects/interfaces I could find in the standard library for consistency reasons: https://docs.python.org/3/library/io.html#io.BufferedIOBase.write https://docs.python.org/3/library/io.html#io.BufferedWriter.write https://docs.python.org/3/library/io.html#io.RawIOBase.write https://docs.python.org/3/library/io.html#io.TextIOBase.write Why I believe this would be useful: code that writes to file objects and tests the number of bytes/characters written right now will likely fail when it's passed a mmap object because its write() method returns None. With this patch applied it'll work transparently. Please find proposed patch attached, I included information about the exception type in the documentation as it seems fitting (apologies for generating the patch using Git, I'll generate using Mercurial if necessary). |
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| msg260706 - (view) | Author: Berker Peksag (berker.peksag) *  |
Date: 2016-02-23 00:02 | |
Thanks for the patch, Jakub. I don't use mmap module much so I don't have an opinion about the feature, but it sounds reasonable. I left some review comments on Rietveld: http://bugs.python.org/review/26335/ |
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| msg260750 - (view) | Author: Jakub Stasiak (jstasiak) * | Date: 2016-02-23 23:39 | |
Oops, sorry for the silliness in the C code, thanks for reviewing. I modified as suggested, please find the new patch attached. |
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| msg260759 - (view) | Author: Martin Panter (martin.panter) * |
Date: 2016-02-24 02:28 | |
Patch looks okay to me. I guess it would be good to write a What’s New entry as well. |
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| msg260847 - (view) | Author: Jakub Stasiak (jstasiak) * | Date: 2016-02-25 10:05 | |
Thank you. I didn't know whether to add an entry to Doc/whatsnew/3.6.rst, Misc/NEWS or both so I chose both, feel free to modify/remove as needed. The new patch also doesn't have a typo in the versionchanged directive present in the version 2. I noticed more typos like this (single colon instead of double colon), I'll create a separate issue. |
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| msg261128 - (view) | Author: Roundup Robot (python-dev)  |
Date: 2016-03-02 17:29 | |
New changeset ba71aecec943 by Berker Peksag in branch 'default': Issue #26335: Make mmap.write() return the number of bytes written like https://hg.python.org/cpython/rev/ba71aecec943 |
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| msg261129 - (view) | Author: Berker Peksag (berker.peksag) * |
Date: 2016-03-02 17:31 | |
Thanks for the patch, Jakub! |
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| msg261143 - (view) | Author: Jakub Stasiak (jstasiak) * | Date: 2016-03-03 00:02 | |
Glad I could help, thanks for merging! |
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| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:58:27 | admin | set | github: 70523 |
| 2016-03-03 00:02:26 | jstasiak | set | messages: + msg261143 |
| 2016-03-02 17:31:09 | berker.peksag | set | status: open -> closed resolution: fixed messages: + msg261129 stage: patch review -> resolved |
| 2016-03-02 17:29:56 | python-dev | set | nosy:
+ python-dev messages: + msg261128 |
| 2016-02-25 10:05:33 | jstasiak | set | files:
+ mmap_write_return_count3.patch messages: + msg260847 |
| 2016-02-24 02:28:37 | martin.panter | set | nosy:
+ martin.panter messages: + msg260759 |
| 2016-02-23 23:39:34 | jstasiak | set | files:
+ mmap_write_return_count2.patch messages: + msg260750 |
| 2016-02-23 00:02:13 | berker.peksag | set | nosy:
+ berker.peksag messages: + msg260706 components: + Extension Modules, - Library (Lib), IO stage: patch review |
| 2016-02-12 23:23:45 | terry.reedy | set | nosy:
+ twouters |
| 2016-02-10 22:55:37 | jstasiak | create | |