diff --git a/django/core/template/loader.py b/django/core/template/loader.py
index 10989424dbd53..6d747d560d4ba 100644
--- a/django/core/template/loader.py
+++ b/django/core/template/loader.py
@@ -59,7 +59,7 @@ def make_origin(display_name, loader, name, dirs):
 def find_template_source(name, dirs=None):
     for loader in template_source_loaders:
         try:
-            source, display_name  = loader(name, dirs)
+            source, display_name = loader(name, dirs)
             return (source, make_origin(display_name, loader, name, dirs))
         except TemplateDoesNotExist:
             pass
diff --git a/django/core/template/loaders/app_directories.py b/django/core/template/loaders/app_directories.py
index d7c02c68eafaf..390e47852e088 100644
--- a/django/core/template/loaders/app_directories.py
+++ b/django/core/template/loaders/app_directories.py
@@ -27,9 +27,12 @@
 # It won't change, so convert it to a tuple to save memory.
 app_template_dirs = tuple(app_template_dirs)
 
-def load_template_source(template_name, template_dirs=None):
+def get_template_sources(template_name, template_dirs=None):
     for template_dir in app_template_dirs:
-        filepath = os.path.join(template_dir, template_name) + TEMPLATE_FILE_EXTENSION
+        yield os.path.join(template_dir, template_name) + TEMPLATE_FILE_EXTENSION
+
+def load_template_source(template_name, template_dirs=None):
+    for filepath in get_template_sources(template_name, template_dirs):
         try:
             return (open(filepath).read(), filepath)
         except IOError:
diff --git a/django/core/template/loaders/filesystem.py b/django/core/template/loaders/filesystem.py
index 9a934817057ad..23ce6cd9e4bb3 100644
--- a/django/core/template/loaders/filesystem.py
+++ b/django/core/template/loaders/filesystem.py
@@ -4,12 +4,15 @@
 from django.core.template import TemplateDoesNotExist
 import os
 
-def load_template_source(template_name, template_dirs=None):
+def get_template_sources(template_name, template_dirs=None):
     if not template_dirs:
         template_dirs = TEMPLATE_DIRS
-    tried = []
     for template_dir in template_dirs:
-        filepath = os.path.join(template_dir, template_name) + TEMPLATE_FILE_EXTENSION
+        yield os.path.join(template_dir, template_name) + TEMPLATE_FILE_EXTENSION
+
+def load_template_source(template_name, template_dirs=None):
+    tried = []
+    for filepath in get_template_sources(template_name, template_dirs):
         try:
             return (open(filepath).read(), filepath)
         except IOError: