Unnecessary

IPython/nbconvert/nbconvertapp.py

@@ -212,13 +212,7 b' class NbConvertApp(BaseIPythonApplication):'
 
         # If nothing was converted successfully, help the user.
         if conversion_success == 0:
-
-            # No notebooks were specified, show help.
-            if len(self.notebooks) == 0:
-                self.print_help()
-
-            # Show how to access help.
-            print('For help, use "ipython nbconvert --help"')
+            self.print_help()
 
 
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