Fix default value of exported_urlpatterns

- rstrip() is not the right function to use
- __file__ can end in ".pyc", not just ".py"
- remove an additional '.' to have a correct module path at the end

coin/apps.py

@@ -1,7 +1,10 @@
+from os.path import basename
+
 import six
-import django
 from django.apps import apps
-from os.path import basename
+
+from .utils import rstrip_str
+
 
 class AppURLsMeta(type):
     def __init__(cls, name, bases, data):
@@ -13,8 +16,8 @@ class AppURLsMeta(type):
             else:
                 # Default : sets
                 #   exported_urlpatterns = [(<app_name>, <app_url_module>)]
-                current_path = basename(__file__).rstrip('.py')
-                url_module = cls.__module__.rstrip(current_path) + '.urls'
+                current_path = '.' + rstrip_str(rstrip_str(basename(__file__), '.pyc'), '.py')
+                url_module = rstrip_str(cls.__module__, current_path) + '.urls'
                 cls.exported_urlpatterns = [(data['name'], url_module)]
 
             cls.urlprefix = data.pop('urlprefix', None)

coin/utils.py

@@ -30,6 +30,13 @@ re_chat_url = re.compile(r'(?P<protocol>\w+://)(?P<server>[\w\.]+)/(?P<channel>.
 def str_or_none(obj):
     return str(obj) if obj else None
 
+def rstrip_str(s, suffix):
+    """Return a copy of the string [s] with the string [suffix] removed from
+    the end (if [s] ends with [suffix], otherwise return s)."""
+    if s.endswith(suffix):
+        return s[:-len(suffix)]
+    else:
+        return s
 
 def ldap_hash(password):
     """Hash a password for use with LDAP.  If the password is already hashed,