Announcing Tornado 5.1

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Ben Darnell

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Jul 11, 2018, 9:56:34 AM7/11/18

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I'm pleased to announce the release of Tornado 5.1, available from PyPI.

This will be the *last* release of Tornado to support Python 2. Tornado 6.0 will require Python 3.5+. In addition, many legacy APIs including most callback arguments are being removed from Tornado in version 6.0. This release includes deprecation warnings for all upcoming changes. If your application runs on python 3 with the appropriate warning flags (deprecation warnings are not enabled by default) without generating warnings, you should be able to upgrade to 6.0 when it arrives without problems.

Full release notes are available at

http://www.tornadoweb.org/en/stable/releases/v5.1.0.html

Thanks to everyone who contributed PRs and feedback that went into this release!