The Tornado Authors Oct 31, 2020 Contents 1 Quick links 3 2 Hello, world 5 3 Threads and WSGI 7 4 asyncio Integration 9 5 Installation 11 6 Documentation 13 6.1 User’s guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153 7 Discussion and support 229 Python Module Index 231 Index 233 i ii Tornado Documentation, Release referencing any Tornado objects. run_in_executor is the recommended way to interact with blocking code. 7 Tornado Documentation, Release 6.1 8 Chapter 3. Threads and WSGI CHAPTER 4 asyncio Integration

The Tornado Authors Mar 04, 2020 CONTENTS 1 Quick links 3 2 Hello, world 5 3 Threads and WSGI 7 4 asyncio Integration 9 5 Installation 11 6 Documentation 13 6.1 User’s guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150 7 Discussion and support 229 Python Module Index 231 Index 233 i ii Tornado Documentation, Release referencing any Tornado objects. run_in_executor is the recommended way to interact with blocking code. 7 Tornado Documentation, Release 6.0.4 8 Chapter 3. Threads and WSGI CHAPTER FOUR ASYNCIO INTEGRATION

The Tornado Authors Jan 12, 2024 CONTENTS 1 Quick links 3 2 Hello, world 5 3 Threads and WSGI 7 4 asyncio Integration 9 5 Installation 11 6 Documentation 13 6.1 User’s guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164 7 Discussion and support 251 Python Module Index 253 Index 255 i ii Tornado Documentation, Release referencing any Tornado objects. run_in_executor is the recommended way to interact with blocking code. 7 Tornado Documentation, Release 6.4 8 Chapter 3. Threads and WSGI CHAPTER FOUR ASYNCIO INTEGRATION

The Tornado Authors Jul 03, 2022 CONTENTS 1 Quick links 3 2 Hello, world 5 3 Threads and WSGI 7 4 asyncio Integration 9 5 Installation 11 6 Documentation 13 6.1 User’s guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162 7 Discussion and support 243 Python Module Index 245 Index 247 i ii Tornado Documentation, Release referencing any Tornado objects. run_in_executor is the recommended way to interact with blocking code. 7 Tornado Documentation, Release 6.2 8 Chapter 3. Threads and WSGI CHAPTER FOUR ASYNCIO INTEGRATION

The Tornado Authors Nov 29, 2023 CONTENTS 1 Quick links 3 2 Hello, world 5 3 Threads and WSGI 7 4 asyncio Integration 9 5 Installation 11 6 Documentation 13 6.1 User’s guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164 7 Discussion and support 251 Python Module Index 253 Index 255 i ii Tornado Documentation, Release referencing any Tornado objects. run_in_executor is the recommended way to interact with blocking code. 7 Tornado Documentation, Release 6.4 8 Chapter 3. Threads and WSGI CHAPTER FOUR ASYNCIO INTEGRATION

The Tornado Authors Nov 29, 2023 CONTENTS 1 Quick links 3 2 Hello, world 5 3 Threads and WSGI 7 4 asyncio Integration 9 5 Installation 11 6 Documentation 13 6.1 User’s guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164 7 Discussion and support 251 Python Module Index 253 Index 255 i ii Tornado Documentation, Release referencing any Tornado objects. run_in_executor is the recommended way to interact with blocking code. 7 Tornado Documentation, Release 6.4 8 Chapter 3. Threads and WSGI CHAPTER FOUR ASYNCIO INTEGRATION

The Tornado Authors Aug 11, 2023 CONTENTS 1 Quick links 3 2 Hello, world 5 3 Threads and WSGI 7 4 asyncio Integration 9 5 Installation 11 6 Documentation 13 6.1 User’s guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163 7 Discussion and support 247 Python Module Index 249 Index 251 i ii Tornado Documentation, Release referencing any Tornado objects. run_in_executor is the recommended way to interact with blocking code. 7 Tornado Documentation, Release 6.3.3 8 Chapter 3. Threads and WSGI CHAPTER FOUR ASYNCIO INTEGRATION

1 The Tornado Authors May 22, 2025CONTENTS 1 Quick links 3 2 Hello, world 5 3 Threads and WSGI 7 4 asyncio Integration 9 5 Installation 11 6 Documentation 13 6.1 User’s guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165 7 Discussion and support 255 Python Module Index 257 Index 259 iiiTornado Documentation, Release 6 referencing any Tornado objects. run_in_executor is the recommended way to interact with blocking code. 7Tornado Documentation, Release 6.5.1 8 Chapter 3. Threads and WSGICHAPTER FOUR ASYNCIO INTEGRATION

Tornado 5.1.1 Sep 16, 2018 What’s new in Tornado 5.1 July 12, 2018 What’s new in Tornado 5.0.2 Apr 7, 2018 What’s new in Tornado 5.0.1 Mar 18, 2018What’s new in Tornado 5.0 Mar 5, 2018 What’s new in Tornado 4.2.1 Jul 17, 2015 What’s new in Tornado 4.2 May 26, 2015 What’s new in Tornado 4.1 Feb 7, 2015 What’s new in Tornado 4.0.2 Sept 10, 2014 What’s new in Tornado 4.0.1 Aug 12, 2014 What’s Tornado 1.2 Feb 20, 2011 What’s new in Tornado 1.1.1 Feb 8, 2011 What’s new in Tornado 1.1 Sep 7, 2010 What’s new in Tornado 1.0.1 Aug 13, 2010 What’s new in Tornado 1.0 July 22, 2010What’s new

Tornado 5.1.1 Sep 16, 2018 What’s new in Tornado 5.1 July 12, 2018 What’s new in Tornado 5.0.2 Apr 7, 2018 What’s new in Tornado 5.0.1 Mar 18, 2018 What’s new in Tornado 5.0 Mar 5, 2018 What’s new Tornado 4.2.1 Jul 17, 2015 What’s new in Tornado 4.2 May 26, 2015 What’s new in Tornado 4.1 Feb 7, 2015 What’s new in Tornado 4.0.2 Sept 10, 2014 What’s new in Tornado 4.0.1 Aug 12, 2014 What’s Tornado 1.2 Feb 20, 2011 What’s new in Tornado 1.1.1 Feb 8, 2011 What’s new in Tornado 1.1 Sep 7, 2010 What’s new in Tornado 1.0.1 Aug 13, 2010 What’s new in Tornado 1.0 July 22, 2010 What’s new