Add authentication and registration to seahub

thirdpart/registration/backends/__init__.py

@@ -0,0 +1,32 @@
+from django.core.exceptions import ImproperlyConfigured
+
+
+# Python 2.7 has an importlib with import_module; for older Pythons,
+# Django's bundled copy provides it.
+try:
+    from importlib import import_module
+except ImportError:
+    from django.utils.importlib import import_module
+
+def get_backend(path):
+    """
+    Return an instance of a registration backend, given the dotted
+    Python import path (as a string) to the backend class.
+
+    If the backend cannot be located (e.g., because no such module
+    exists, or because the module does not contain a class of the
+    appropriate name), ``django.core.exceptions.ImproperlyConfigured``
+    is raised.
+    
+    """
+    i = path.rfind('.')
+    module, attr = path[:i], path[i+1:]
+    try:
+        mod = import_module(module)
+    except ImportError, e:
+        raise ImproperlyConfigured('Error loading registration backend %s: "%s"' % (module, e))
+    try:
+        backend_class = getattr(mod, attr)
+    except AttributeError:
+        raise ImproperlyConfigured('Module "%s" does not define a registration backend named "%s"' % (module, attr))
+    return backend_class()