IDLE completes global names, attributes, and file names with various invocation methods.  The main problem users have in editor windows is not running the module to update namespaces.  But the claim here (and in the PR) is that there is a timing problem. 

JN,  please post at least one minimal, specific, sometimes reproducible example, with code and user actions, that misbehaves.  Do you have any idea why a 1 millesecond delay helps?

(3.5 and 3.6 only get security fixes.)