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-rw-r--r--django/core/checks/urls.py5
-rw-r--r--tests/check_framework/urls/unique_namespaces.py2
2 files changed, 6 insertions, 1 deletions
diff --git a/django/core/checks/urls.py b/django/core/checks/urls.py
index 13c7e2b08b..0f65d3f3b7 100644
--- a/django/core/checks/urls.py
+++ b/django/core/checks/urls.py
@@ -60,7 +60,10 @@ def _load_all_namespaces(resolver, parents=()):
if getattr(url, 'namespace', None) is not None
]
for pattern in url_patterns:
- current = parents + (getattr(pattern, 'namespace', ()),)
+ namespace = getattr(pattern, 'namespace', None)
+ current = parents
+ if namespace is not None:
+ current += (namespace,)
namespaces.extend(_load_all_namespaces(pattern, current))
return namespaces
diff --git a/tests/check_framework/urls/unique_namespaces.py b/tests/check_framework/urls/unique_namespaces.py
index 10d427eec9..b3f7fd70d0 100644
--- a/tests/check_framework/urls/unique_namespaces.py
+++ b/tests/check_framework/urls/unique_namespaces.py
@@ -15,4 +15,6 @@ urlpatterns = [
# 'nested' is included twice but namespaced by nested-1 and nested-2.
url(r'^app-ns1-2/', include(nested_url_patterns, namespace='nested-1')),
url(r'^app-ns1-3/', include(nested_url_patterns, namespace='nested-2')),
+ # namespaced URLs inside non-namespaced URLs.
+ url(r'^app-ns1-4/', include([url(r'^abc/', include(common_url_patterns))])),
]