Could you please file this as an issue on bugs.python.org?
Thanks!
-Greg
On Sat, Oct 17, 2020 at 7:25 PM Rob Cliffe via Python-Dev <
python-dev@python.org> wrote:
>
> TLDR: In os.scandir directory entries, atime is always a copy of mtime
> rather than the actual access time.
>
> Demo program: Windows 10, Python 3.8.3:
>
> # osscandirtest.py
> import time, os
> with open('Test', 'w') as f: f.write('Anything\n') # Write to a file
> time.sleep(10)
> with open('Test', 'r') as f: f.readline() # Read the file
> print(os.stat('Test'))
> for DirEntry in os.scandir('.'):
> if DirEntry.name == 'Test':
> stat = DirEntry.stat()
> print(f'scandir DirEntry {stat.st_ctime=} {stat.st_mtime=}
> {stat.st_atime=}')
>
> Sample output:
>
> os.stat_result(st_mode=33206, st_ino=8162774324687317,
> st_dev=2230120362, st_nlink=1, st_uid=0,
> st_gid=0, st_size=10, st_atime=1600631381, st_mtime=1600631371,
> st_ctime=1600631262)
> scandir DirEntry stat.st_ctime=1600631262.951019
> stat.st_mtime=1600631371.7062848 stat.st_atime=1600631371.7062848
>
> For os.stat, atime is 10 seconds more than mtime, as would be expected.
> But for os.scandir, atime is a copy of mtime.
> ISTM that this is a bug, and in fact recently it stopped me from using
> os.scandir in a program where I needed the access timestamp. No big
> deal, but ...
> If it is a feature for some reason, presumably it should be documented.
>
> Best wishes
> Rob Cliffe
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