The patch is mostly obsolete.  I added query.py a year ago, which replaced the open-module box and those used in configdialog.  The code began with one of the existing boxes, but it has the two improvements listed above: a) stay open on error (really helpful if I type 'idlelib.run' and only need to correct one letter) and b) put error message below entry box.

I am leaving this open temporarily to see if there is anything in this patch needed in Query.