diff --git a/Lib/test/test_cgi.py b/Lib/test/test_cgi.py
--- a/Lib/test/test_cgi.py
+++ b/Lib/test/test_cgi.py
@@ -156,6 +156,12 @@
             cgi.logfile = "/dev/null"
             cgi.initlog("%s", "Testing log 3")
             cgi.log("Testing log 4")
+        # suppress ResourceWarning in regrtest; leave cgi.log* in a
+        # consistent state in case another test wants to use it
+        cgi.logfp.close()
+        cgi.logfile = ""
+        cgi.logfp = None
+        cgi.log = cgi.initlog
 
     def test_fieldstorage_readline(self):
         # FieldStorage uses readline, which has the capacity to read all