[issue28192] Don't import readline in isolated mode

[Steve Dower]

Steve Dower added the comment:

The NEWS change slipped into my following commit, and I just did the one merge.

Since you're here, any ideas on how to test this? Adding a readline.py during the test suite will affect any tests running in parallel...

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue28192>
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