>>> import concurrent.futures
>>> dir(concurrent.futures)
Traceback (most recent call last):
  File "<python-input-2>", line 1, in <module>
    dir(concurrent.futures)
    ~~~^^^^^^^^^^^^^^^^^^^^
  File "/Users/henryschreiner/.local/share/uv/python/cpython-3.14.0rc1+freethreaded-macos-x86_64-none/lib/python3.14t/concurrent/futures/__init__.py", line 47, in __dir__
    return __all__ + ('__author__', '__doc__')
           ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
TypeError: can only concatenate list (not "tuple") to list