Remove the debugging print line from the test.
diff --git a/Lib/test/test_httplib.py b/Lib/test/test_httplib.py
index 5a6422d..ab2a3e6 100644
--- a/Lib/test/test_httplib.py
+++ b/Lib/test/test_httplib.py
@@ -95,7 +95,6 @@
         conn.sock = FakeSocket(None)
         conn.putrequest('GET','/')
         conn.putheader('Content-length', 42)
-        print(conn._buffer)
         self.assertTrue(b'Content-length: 42' in conn._buffer)