Nick Coghlan added the comment:
Failing test case showing that Python 3.3 can't reload a module that is
converted to a package behind importlib's back (I like this better than the
purely introspection based tests, since it shows a real, albeit obscure,
regression due to this behavioural change):
$ ./broken_reload.py
E
======================================================================
ERROR: test_module_to_package (__main__.TestBadReload)
----------------------------------------------------------------------
Traceback (most recent call last):
File "./broken_reload.py", line 28, in test_module_to_package
imp.reload(mod)
File "/usr/lib64/python3.3/imp.py", line 271, in reload
return module.__loader__.load_module(name)
File "<frozen importlib._bootstrap>", line 586, in _check_name_wrapper
File "<frozen importlib._bootstrap>", line 1024, in load_module
File "<frozen importlib._bootstrap>", line 1005, in load_module
File "<frozen importlib._bootstrap>", line 562, in module_for_loader_wrapper
File "<frozen importlib._bootstrap>", line 855, in _load_module
File "<frozen importlib._bootstrap>", line 950, in get_code
File "<frozen importlib._bootstrap>", line 1043, in path_stats
FileNotFoundError: [Errno 2] No such file or directory:
'/tmp/tmp_n48mm/to_be_reloaded.py'
----------------------------------------------------------------------
Ran 1 test in 0.002s
FAILED (errors=1)
Interactive session showing that import.c didn't have this problem, since it
reran the whole search (foo is just a toy module I had lying around in my play
directory):
$ python
Python 2.7.5 (default, Oct 8 2013, 12:19:40)
[GCC 4.8.1 20130603 (Red Hat 4.8.1-1)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import foo
Hello
>>> foo.__file__
'foo.py'
>>> import os
>>> os.mkdir("foo")
>>> os.rename('foo.py', 'foo/__init__.py')
>>> reload(foo)
Hello
<module 'foo' from 'foo/__init__.py'>
>>> foo.__file__
'foo/__init__.py'
>>>
----------
Added file: http://bugs.python.org/file32433/broken_reload.py
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue19413>
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