New submission from Norbert <pyt...@lindenbergsoftware.com>: Modules whose names contain characters that are in precomposed form but can be decomposed in Normalization Form D can’t be found on macOS.
To reproduce: 1. Download and unzip the attached file Modules.zip. This produces a directory Modules with four Python source files. 2. In Terminal, go to the directory that contains Modules. 3. Run "python3 -m Modules.Import". Expected behavior: The following lines should be generated: Maerchen Märchen Actual behavior: The first line, “Maerchen” is generated, but then an error occurs: Traceback (most recent call last): File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/runpy.py", line 193, in _run_module_as_main return _run_code(code, main_globals, None, File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/runpy.py", line 86, in _run_code exec(code, run_globals) File "/Users/business/tmp/pyimports/Modules/Import.py", line 5, in <module> from Modules.Märchen import hello2 ModuleNotFoundError: No module named 'Modules.Märchen' Evaluation: In the source file Modules/Import.py, the name of the module “Märchen” is written with the precomposed character U+00E4. The file name Märchen.py uses the decomposed character sequence U+0061 U+0308 instead. Macintosh file names commonly use a variant of Normalization Form D in file names – the old file system HFS enforces this, and while APFS doesn’t, the Finder still generates file names in this form. U+00E4 and U+0061 U+0308 are canonically equivalent, so they should be treated as equal in module loading. Tested configuration: CPython 3.8.2 macOS 10.14.6 ---------- components: Interpreter Core files: Modules.zip messages: 363224 nosy: Norbert priority: normal severity: normal status: open title: Modules with decomposable characters in module name not found on macOS type: behavior versions: Python 3.8 Added file: https://bugs.python.org/file48944/Modules.zip _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue39832> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
