Lint-friendly help noop function.

1 files changed, 5 insertions, 1 deletions

diff --git a/coverage/cmdline.py b/coverage/cmdline.py
index c530cfb9..5f1919d0 100644
--- a/coverage/cmdline.py
+++ b/coverage/cmdline.py
@@ -108,7 +108,11 @@ class CoverageOptionParser(optparse.OptionParser, object):
             )
 
         self.disable_interspersed_args()
-        self.help_fn = lambda: None
+        self.help_fn = self.help_noop
+
+    def help_noop(self, error=None, topic=None, parser=None):
+        """No-op help function."""
+        pass
 
     class OptionParserError(Exception):
         """Used to stop the optparse error handler ending the process."""