>>> import types
>>> types.ModuleType("concurrent.futures").missing_attribute
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: module 'concurrent.futures' has no attribute 'missing_attribute'
>>> import concurrent.futures
>>> concurrent.futures.missing_attribute
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/graingert/miniconda3/lib/python3.9/concurrent/futures/__init__.py", line 53, in __getattr__
    raise AttributeError(f"module {__name__} has no attribute {name}")
AttributeError: module concurrent.futures has no attribute missing_attribute