Message 350824 - Python tracker

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Content 
... and the other important difference is that older versions of macOS do not support fd functions so _use_fd_functions is false and the alternate path is taken in shutil.rmtree, the path that calls _rm_tree_islink which fails.

>>> shutil.rmtree('a')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/shutil.py", line 718, in rmtree
    if _rmtree_islink(path):
  File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/shutil.py", line 564, in _rmtree_islink
    (st.st_file_attributes & stat.FILE_ATTRIBUTE_REPARSE_POINT
AttributeError: 'os.stat_result' object has no attribute 'st_file_attributes'