See bug at: https://bugs.python.org/issue30814
Code to reproduce a bug in Python 3.6
Using the following code in concurrent code will fail:
import package.module as _aliasWhile the following just works fine:
from package import module as _aliasor even just
import package.moduleFrom a clone of the repo:
% python3.6 foo.py
Traceback (most recent call last):
File "foo.py", line 7, in <module>
pool.map(do_stuff, range(100))
File "/usr/lib/python3.6/multiprocessing/pool.py", line 260, in map
return self._map_async(func, iterable, mapstar, chunksize).get()
File "/usr/lib/python3.6/multiprocessing/pool.py", line 608, in get
raise self._value
File "/usr/lib/python3.6/multiprocessing/pool.py", line 119, in worker
result = (True, func(*args, **kwds))
File "/usr/lib/python3.6/multiprocessing/pool.py", line 44, in mapstar
return list(map(*args))
File "foo.py", line 4, in do_stuff
from foobar import somefunction
File "/tmp/tmp.K5XNcFjb5m/foobar/__init__.py", line 1, in <module>
import foobar.submodule as foo
AttributeError: module 'foobar' has no attribute 'submodule'
- python3.6 seems to be affected (3.6.1 on Archlinux; official Python docker image)
- python3.5 seems to be immune
