New submission from tegavu <tegavu8...@sogetthis.com>: Wrong behavior in pathlib.PureWindowsPath - sorting does not use natural sort.
Everything below was written based on W7x64 & Python 3.8.1 (tags/v3.8.1:1b293b6, Dec 18 2019, 23:11:46) [MSC v.1916 64 bit (AMD64)] on win32. The documentation (https://docs.python.org/3/library/pathlib.html#general-properties) states: "Paths of a same flavour are comparable and orderable." This can be done like this: from pathlib import * print( PureWindowsPath('C:\\1') < PureWindowsPath('C:\\a') ) This returns True. This is expected because 1 is sorted before a on Windows. This sorting also works well for harder cases where other sorting functions fail: !1 should be before 1 and !a should be before a. But it fails with natural sorting: from pathlib import * print( PureWindowsPath('C:\\15') < PureWindowsPath('C:\\100') ) This returns False. This is a bug in my opinion, since PureWindowsPath should sort like Windows(Explorer) would sort. Right now PureWindowsPath does probably something like NTFS sorting, but NTFS is not Windows and from a function called 'WindowsPath' I expect a path that would be given in Windows Explorer. In case a simple `dir` on Windows sorts by NTFS names (I am not sure!), PureWindowsPath also fails, since (for example) "[" < "a" should be False. See this image for comparison: https://i.imgur.com/GjBhWsS.png Here is a string that can be used directly as a list to check sorting: test_list = ['15', '100', '11111', '!', '#', '$', '%', '&', "'", '(', ')', '+', '+11111', '+aaaaa', ',', '-', ';', '=', '@', '[', ']', '^', '_', '`', 'aaaaa', 'foo0', 'foo_0', '{', '}', '~', '§', '°', '´', 'µ', '€'] ---------- messages: 361315 nosy: tegavu priority: normal severity: normal status: open title: Pathlib PureWindowsPath sorting incorrect (is not natural sort) type: behavior versions: Python 3.8 _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue39544> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
