COM automation, Internet Explorer, DocumentComplete event

[puff]

Without going into an overly long discussion, suffice to say that the
busy attribute, notwithstanding Microsoft documentation to the
contrary, simply doesn't work.

BTW, there are a fair number of URLs for which PAMIE's combination of
busy and readystate doesn't work.

This scheme is somewhat better than both, but (of course it could only
be) also doesn't work under some cases.  Nevertheless, it's better
than depending on busy or ready state.

So how do I do the equivalent of pDisp Is WebBrowser1.Object in python?