designed for Unix-like platforms, with best performance and scalability on systems supporting epoll (Linux), kqueue (BSD/macOS), or /dev/poll (Solaris). Tornado will also run on Windows, although this configuration scalable on Windows than on other platforms. • Binary wheels are now provided for Windows, MacOS, and Linux (amd64 and arm64). tornado.gen • coroutine now has better support for the Python 3.7+ contextvars read_until_close are deprecated and will be removed in 6.0. tornado.netutil • Improved compatibility with GNU Hurd. tornado.options • tornado.options.parse_config_file now allows setting options to strings (which

Tornado should run on any Unix-like platform, although for the best performance and scalability only Linux (with epoll) and BSD (with kqueue) are recommended for production deployment (even though Mac OS X loop. On Python 3, IOLoop is a wrapper around the asyncio event loop. On Python 2, it uses epoll (Linux) or kqueue (BSD and Mac OS X) if they are available, or else we fall back on select(). If you are Release notes 159 Tornado Documentation, Release 5.1.1 tornado.netutil • Improved compatibility with GNU Hurd. tornado.options • tornado.options.parse_config_file now allows setting options to strings (which

designed for Unix-like platforms, with best performance and scalability on systems supporting epoll (Linux), kqueue (BSD/macOS), or /dev/poll (Solaris). Tornado will also run on Windows, although this configuration available inside the event loop on Windows. tornado.netutil • bind_unix_socket now supports the Linux abstract namespace. tornado.platform.twisted • TwistedResolver has been deleted. It was already scalable on Windows than on other platforms. • Binary wheels are now provided for Windows, MacOS, and Linux (amd64 and arm64). 6.9. Release notes 175Tornado Documentation, Release 6.5.1 tornado.gen • coroutine

Tornado should run on any Unix-like platform, although for the best performance and scalability only Linux (with epoll) and BSD (with kqueue) are recommended for production deployment (even though Mac OS X read_until_close are deprecated and will be removed in 6.0. tornado.netutil • Improved compatibility with GNU Hurd. tornado.options • tornado.options.parse_config_file now allows setting options to strings (which restores support for versions of Python 3.4 prior to 3.4.4. This is important for compatibility with Debian Jessie which has 3.4.2 as its version of Python 3. 158 Chapter 6. Documentation Tornado Documentation

designed for Unix-like platforms, with best performance and scalability on systems supporting epoll (Linux), kqueue (BSD/macOS), or /dev/poll (Solaris). Tornado will also run on Windows, although this configuration scalable on Windows than on other platforms. • Binary wheels are now provided for Windows, MacOS, and Linux (amd64 and arm64). tornado.gen • coroutine now has better support for the Python 3.7+ contextvars read_until_close are deprecated and will be removed in 6.0. tornado.netutil • Improved compatibility with GNU Hurd. tornado.options • tornado.options.parse_config_file now allows setting options to strings (which

designed for Unix-like platforms, with best performance and scalability on systems supporting epoll (Linux), kqueue (BSD/macOS), or /dev/poll (Solaris). Tornado will also run on Windows, although this configuration scalable on Windows than on other platforms. • Binary wheels are now provided for Windows, MacOS, and Linux (amd64 and arm64). 164 Chapter 6. Documentation Tornado Documentation, Release 6.2 tornado.gen read_until_close are deprecated and will be removed in 6.0. tornado.netutil • Improved compatibility with GNU Hurd. tornado.options • tornado.options.parse_config_file now allows setting options to strings (which

designed for Unix-like platforms, with best performance and scalability on systems supporting epoll (Linux), kqueue (BSD/macOS), or /dev/poll (Solaris). Tornado will also run on Windows, although this configuration scalable on Windows than on other platforms. • Binary wheels are now provided for Windows, MacOS, and Linux (amd64 and arm64). tornado.gen • coroutine now has better support for the Python 3.7+ contextvars read_until_close are deprecated and will be removed in 6.0. tornado.netutil • Improved compatibility with GNU Hurd. tornado.options • tornado.options.parse_config_file now allows setting options to strings (which

designed for Unix-like platforms, with best performance and scalability on systems supporting epoll (Linux), kqueue (BSD/macOS), or /dev/poll (Solaris). Tornado will also run on Windows, although this configuration scalable on Windows than on other platforms. • Binary wheels are now provided for Windows, MacOS, and Linux (amd64 and arm64). tornado.gen • coroutine now has better support for the Python 3.7+ contextvars read_until_close are deprecated and will be removed in 6.0. tornado.netutil • Improved compatibility with GNU Hurd. tornado.options • tornado.options.parse_config_file now allows setting options to strings (which

designed for Unix-like platforms, with best performance and scalability on systems supporting epoll (Linux), kqueue (BSD/macOS), or /dev/poll (Solaris). Tornado will also run on Windows, although this configuration scalable on Windows than on other platforms. • Binary wheels are now provided for Windows, MacOS, and Linux (amd64 and arm64). 168 Chapter 6. Documentation Tornado Documentation, Release 6.3.3 tornado.gen read_until_close are deprecated and will be removed in 6.0. tornado.netutil • Improved compatibility with GNU Hurd. tornado.options • tornado.options.parse_config_file now allows setting options to strings (which

Tornado should run on any Unix-like platform, although for the best performance and scalability only Linux (with epoll) and BSD (with kqueue) are recommended for production deployment (even though Mac OS X [https://docs.python.org/3.6/library/asyncio.html#module-asyncio] event loop. On Python 2, it uses epoll (Linux) or kqueue (BSD and Mac OS X) if they are available, or else we fall back on select(). If you are read_until_close are deprecated and will be removed in 6.0. tornado.netutil Improved compatibility with GNU Hurd. tornado.options tornado.options.parse_config_file now allows setting options to strings (which