Tests: more Python tests.

test/python/close/wsgi.py

@@ -0,0 +1,10 @@
+class application:
+    def __init__(self, environ, start_response):
+        self.environ = environ
+        self.start = start_response
+
+    def __iter__(self):
+        self.start('200', [(('Content-Length', '0'))])
+
+    def close(self):
+        self.environ['wsgi.errors'].write('Close called.')