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I use blurb to create a .rst file then click add file and choose it to IDLE, but it was wrong. So how should I do?

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The hint process is rather fragile. Modifying get_message_lines so that sys.excepthook does not print any traceback, which require setting err.traceback to None before the call in addition to not passing a traceback, can alter the hint. In particular, for abc, "Did you mean: 'abs'?" is omitted and only "Did you forget to import 'abc'?" is added. Not only do the message changes break multiple tests, but this particular result is worse for the user. I am accepting the alternative of directly printing multiline user name error messages instead of calling a modified get_message_lines. I will look at adding a new test_xxx function to test the case fixed here.

I have made the requested changes; please review again

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@terryjreedy: please review the changes made to this pull request.