[issue23731] Implement PEP 488

[Brett Cannon]

New submission from Brett Cannon:

https://www.python.org/dev/peps/pep-0488/

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assignee: brett.cannon
components: Interpreter Core
messages: 238799
nosy: brett.cannon
priority: release blocker
severity: normal
stage: test needed
status: open
title: Implement PEP 488
type: enhancement
versions: Python 3.5

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<http://bugs.python.org/issue23731>
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