[docs] [issue9264] trace.py documentation is incomplete

[Éric Araujo]

Éric Araujo <merwok at netwok.org> added the comment:

The nesting allows logical grouping in source and output, saves a bit of typing, and has been added to a number of files by Benjamin Peterson.  I’d say it’s recommended :)

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status: pending -> open

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue9264>
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