Make sure a display.width of None gets set to a default value

Author: Kevin D Smith

swat/cas/actions.py

@@ -491,7 +491,7 @@ def _format_actionset_doc(cls, asinfo):
         doc.append('')
         doc.append('Actions')
         doc.append('-------')
-        display_width = pd.options.display.width
+        display_width = pd.options.display.width or 80
         width = 0
         for item in actions:
             width = max(width, len(item['name']))