Python 3.3 (shakes fist)

jingo/__init__.py

@@ -6,12 +6,32 @@ import functools
 import logging
 import re
 
+from django.apps import apps
+from django.conf import settings
+from django.template.base import Origin, TemplateDoesNotExist
+from django.template.loader import BaseLoader
+from django.utils.importlib import import_module
+
 try:
     import importlib.util
-    def has_helpers(path):
-        return importlib.util.find_spec('helpers', path) is not None
+    if hasattr(importlib.util, 'find_spec'):  # Py3>=3.4
+        def has_helpers(path):
+            return importlib.util.find_spec('helpers', path) is not None
+    else:  # Py3<3.4
+        def has_helpers(path):
+            # For Python 3.3, just try to import the module. Unfortunately,
+            # this changes the contract slightly for Python 3.3: if there is an
+            # module but this raises a legitimate ImportError, jingo will act
+            # as if the module doesn't exist. The intent is that we raise
+            # legitimate ImportErrors but ignore missing modules.
+            try:
+                import_module('helpers', path)
+                return True
+            except ImportError:
+                return False
 except ImportError:
     import imp
+
     def has_helpers(path):
         try:
             imp.find_module('helpers', path)
@@ -19,12 +39,6 @@ except ImportError:
         except ImportError:
             return False
 
-from django.apps import apps
-from django.conf import settings
-from django.template.base import Origin, TemplateDoesNotExist
-from django.template.loader import BaseLoader
-from django.utils.importlib import import_module
-
 import jinja2
 
 try: