URLconf does not properly import underscore-containing module identifiers

[Peter Lai]

If I have the following mysite\myapp\urls.py:

from django.conf.urls import url

from my_app import views, other_views

urlpatterns = [
    url(r'^$, views.index, name='index'), # OK
    url(r'^foo/', other_views.bar, name='getfoo'),
]

and in other_views.py:

def bar(request):
    pass

This results in manage.py raising:

File "C:\path\to\django_sites\mysite\mysite\urls.py", line 21, in <module>
    url(r'^myapp/', include('myapp.urls')),
File "C:\path\to\py3_venv\django1\lib\site-packages\django\conf\urls\__init__.py", line 50, in include
    urlconf_module = import_module(urlconf_module)
  File "C:\path\to\py3_venv\django1\lib\importlib\__init__.py", line 109, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 2254, in _gcd_import
  File "<frozen importlib._bootstrap>", line 2237, in _find_and_load
  File "<frozen importlib._bootstrap>", line 2226, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 1200, in _load_unlocked
  File "<frozen importlib._bootstrap>", line 1129, in _exec
  File "<frozen importlib._bootstrap>", line 1471, in exec_module
  File "<frozen importlib._bootstrap>", line 321, in _call_with_frames_removed
File "C:\path\to\django_sites\mysite\myapp\urls.py", line 15, in <module>
    other_views.bar, name='getfoo'),
AttributeError: 'module' object has no attribute 'bar'

Note that mysite\myapp\urls.py is included via the mysite\mysite\urls.py

Renaming other_views.py to otherviews.py fixes the problem. Platform: Python 3.4.3 (v3.4.3:9b73f1c3e601, Feb 24 2015, 22:44:40) [MSC v.1600 64 bit (AMD64)] on win32.

[Tim Graham]

I don't think an underscore should make any difference as far as Django (Python, really) being able to import a module. I tried to reproduce this without success. Maybe you could provide a sample project to our support channels and reopen this ticket if it does turn out to be a problem in Django.