CONTENTS 1Tornado Documentation, Release 6.5.1 2 CONTENTSCHAPTER ONE QUICK LINKS • Current version: 6.5.1 (download from PyPI, release notes) • Source (GitHub) • Mailing lists: discussion and announcements optional packages may be useful: • pycurl is used by the optional tornado.curl_httpclient. Libcurl version 7.22 or higher is required. • pycares is an alternative non-blocking DNS resolver that can be used http_client = AsyncHTTPClient() response = await http_client.fetch(url) return response.body Or for compatibility with older versions of Python, using the tornado.gen module: 14 Chapter 6. DocumentationTornado

and other applications that require a long-lived connection to each user. Quick links Current version: 6.5.1 (download from PyPI [https://pypi.python.org/pypi/tornado], release notes) Source (GitHub) may be useful:pycurl [http://pycurl.io/] is used by the optional tornado.curl_httpclient. Libcurl version 7.22 or higher is required. pycares [https://pypi.org/project/pycares/] is an alternative non-blocking google.com/forum/#!forum/python- tornado-announce]. Tornado is available under the Apache License, Version 2.0 [http://www.apache.org/licenses/LICENSE-2.0.html]. This web site and all documentation is licensed

Byte Array Literals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 8.11 Version Number Literals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 8.12 Raw String for Julia 1.12-rc1. Work in progress! This documentation is for an unreleased, in-development, version of Julia. Please read the release notes to see what has changed since the last release. Note The _| |_ __ _ | Type "?" for help, "]?" for Pkg help. | | | | | | |/ _` | | | | |_| | | | (_| | | Version 1.12.0-rc1 (2025-07-12) _/ |\__'_|_|_|\__'_| | Official https://julialang.org release |__/ | julia>

Byte Array Literals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 8.11 Version Number Literals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 8.12 Raw String for Julia 1.12-beta4. Work in progress! This documentation is for an unreleased, in-development, version of Julia. Please read the release notes to see what has changed since the last release. Note The _| |_ __ _ | Type "?" for help, "]?" for Pkg help. | | | | | | |/ _` | | | | |_| | | | (_| | | Version 1.12.0-beta4 (2025-06-05) _/ |\__'_|_|_|\__'_| | Official https://julialang.org release |__/ |

Byte Array Literals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 8.11 Version Number Literals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 8.12 Raw String for Julia 1.12-beta3. Work in progress! This documentation is for an unreleased, in-development, version of Julia. Please read the release notes to see what has changed since the last release. Note The _| |_ __ _ | Type "?" for help, "]?" for Pkg help. | | | | | | |/ _` | | | | |_| | | | (_| | | Version 1.12.0-beta3 (2025-05-12) _/ |\__'_|_|_|\__'_| | Official https://julialang.org release |__/ |

Byte Array Literals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 8.11 Version Number Literals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 8.12 Raw String for Julia 1.12-beta1. Work in progress! This documentation is for an unreleased, in-development, version of Julia. Please read the release notes to see what has changed since the last release. Note The _| |_ __ _ | Type "?" for help, "]?" for Pkg help. | | | | | | |/ _` | | | | |_| | | | (_| | | Version 1.12.0-beta1 (2025-04-02) _/ |\__'_|_|_|\__'_| | Official https://julialang.org release |__/ |

Byte Array Literals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 8.11 Version Number Literals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 8.12 Raw String for Julia 1.13-DEV. Work in progress! This documentation is for an unreleased, in-development, version of Julia. Please read the release notes to see what has changed since the last release. Note The _| |_ __ _ | Type "?" for help, "]?" for Pkg help. | | | | | | |/ _` | | | | |_| | | | (_| | | Version 1.13.0-DEV.639 (2025-05-25) _/ |\__'_|_|_|\__'_| | Commit 925d504ade4 (1 day old master) |__/ |

Byte Array Literals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 8.11 Version Number Literals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 8.12 Raw String _| |_ __ _ | Type "?" for help, "]?" for Pkg help. | | | | | | |/ _` | | | | |_| | | | (_| | | Version 1.11.6 (2025-07-09) _/ |\__'_|_|_|\__'_| | Official https://julialang.org/ release |__/ | julia> Julia can be installed directly from the Windows store here. One can also install exactly the same version by executing winget install julia -s msstore in any shell. 3.2 Mac and Linux Julia can be installed

Byte Array Literals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 8.11 Version Number Literals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 8.12 Raw String _| |_ __ _ | Type "?" for help, "]?" for Pkg help. | | | | | | |/ _` | | | | |_| | | | (_| | | Version 1.11.5 (2025-04-14) _/ |\__'_|_|_|\__'_| | Official https://julialang.org/ release |__/ | julia> Julia can be installed directly from the Windows store here. One can also install exactly the same version by executing winget install julia -s msstore in any shell. 3.2 Mac and Linux Julia can be installed

Byte Array Literals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 8.11 Version Number Literals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 8.12 Raw String _| |_ __ _ | Type "?" for help, "]?" for Pkg help. | | | | | | |/ _` | | | | |_| | | | (_| | | Version 1.11.4 (2025-03-10) _/ |\__'_|_|_|\__'_| | Official https://julialang.org/ release |__/ | julia> Julia can be installed directly from the Windows store here. One can also install exactly the same version by executing winget install julia -s msstore in any shell. 3.2 Mac and Linux Julia can be installed