What’s new in Tornado 6.0.4

Mar 3, 2020

General changes

• Binary wheels are now available for Python 3.8 on Windows. Note that it is still necessary to use asyncio.set_event_loop_policy(asyncio.WindowsSelectorEventLoopPolicy()) for this platform/version.

Bug fixes

• Fixed an issue in IOStream (introduced in 6.0.0) that resulted in StreamClosedError being incorrectly raised if a stream is closed mid-read but there is enough buffered data to satisfy the read.

• AnyThreadEventLoopPolicy now always uses the selector event loop on Windows.