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### Navigation - [index](# "General Index") - [modules](# "Python Module Index") | - [next](# "What鈥檚 new in Tornado 2.4") | - [previous](# "What鈥檚 new in Tornado 3.0") | - [Tornado 4.4.dev1 documentation](#) » - [Release notes](#) » # What's new in Tornado 2.4.1 ### Nov 24, 2012 ### Bug fixes - Fixed a memory leak in [`tornado.stack_context`](# "tornado.stack_context") that was especially likelywith long-running `@gen.engine` functions. - [`tornado.auth.TwitterMixin`](# "tornado.auth.TwitterMixin") now works on Python 3. - Fixed a bug in which `IOStream.read_until_close` with a streaming callbackwould sometimes pass the last chunk of data to the final callback insteadof the streaming callback. © Copyright 2009-2016, The Tornado Authors. Created using [Sphinx](http://sphinx-doc.org/) 1.3.5.