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-rwxr-xr-xtest/test_environ.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/test/test_environ.py b/test/test_environ.py
index 5198b02..930280c 100755
--- a/test/test_environ.py
+++ b/test/test_environ.py
@@ -586,7 +586,7 @@ class TestRedirect(unittest.TestCase):
def assertRedirect(self, target, result, query=None, status=303, **args):
env = {'SERVER_PROTOCOL':'HTTP/1.1'}
- for key in args:
+ for key in list(args):
if key.startswith('wsgi'):
args[key.replace('_', '.', 1)] = args[key]
del args[key]