In 3.3 and 3.4, exceptions are not silenced anymore:

>>> import resource
>>> resource.setrlimit(resource.RLIMIT_NOFILE, (2, 100))
>>> import encodings.idna
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "<frozen importlib._bootstrap>", line 1584, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1551, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 586, in _check_name_wrapper
  File "<frozen importlib._bootstrap>", line 1049, in load_module
  File "<frozen importlib._bootstrap>", line 1030, in load_module
  File "<frozen importlib._bootstrap>", line 562, in module_for_loader_wrapper
  File "<frozen importlib._bootstrap>", line 883, in _load_module
  File "<frozen importlib._bootstrap>", line 1008, in get_code
  File "<frozen importlib._bootstrap>", line 1058, in get_data
OSError: [Errno 24] Too many open files: '/home/antoine/cpython/default/Lib/encodings/idna.py'


Given that fixing the issue in bugfix branches would be a slight behaviour change, I think we can close this issue.