Handle unicode strings with import_string (refs GH-627)

raven/utils/imports.py

@@ -1,10 +1,16 @@
 from __future__ import absolute_import
 
+from . import six
+
 
 def import_string(key):
+    # HACK(dcramer): Ensure a unicode key is still importable
+    if not six.PY3:
+        key = str(key)
+
     if '.' not in key:
         return __import__(key)
 
     module_name, class_name = key.rsplit('.', 1)
-    module = __import__(module_name, {}, {}, [class_name])
+    module = __import__(module_name, {}, {}, [class_name], 0)
     return getattr(module, class_name)

tests/utils/test_imports.py

@@ -0,0 +1,22 @@
+from __future__ import absolute_import
+
+import raven
+
+from raven.utils import six
+from raven.utils.imports import import_string
+
+
+def test_import_string():
+    new_raven = import_string('raven')
+    assert new_raven is raven
+
+    # this will test unicode on python2
+    new_raven = import_string(six.text_type('raven'))
+    assert new_raven is raven
+
+    new_client = import_string('raven.Client')
+    assert new_client is raven.Client
+
+    # this will test unicode on python2
+    new_client = import_string(six.text_type('raven.Client'))
+    assert new_client is raven.Client