methods; for coroutines, use the @gen.coroutine decorator without @asynchronous. (It is legal for legacy reasons to use the two decorators together provided @asynchronous is first, but @asynchronous will Coroutines and concurrency tornado.gen — Simplify asynchronous code Decorators Utility functions Legacy interface tornado.concurrent — Work with threads and futures Consumer methods Producer methods whether func is a coroutine function, i.e. a function wrapped with coroutine. New in version 4.5. Legacy interface Before support for Futures was introduced in Tornado 3.0, coroutines used subclasses of

methods; for coroutines, use the @gen.coroutine decorator without @asynchronous. (It is legal for legacy reasons to use the two decorators together provided @asynchronous is first, but @asynchronous will Coroutines and concurrency tornado.gen — Generator-based coroutines Decorators Utility functions Legacy interface tornado.locks – Synchronization primitives Condition Event Semaphore BoundedSemaphore whether func is a coroutine function, i.e. a function wrapped with coroutine. New in version 4.5. Legacy interface Before support for Futures was introduced in Tornado 3.0, coroutines used subclasses of

methods; for coroutines, use the @gen.coroutine dec- orator without @asynchronous. (It is legal for legacy reasons to use the two decorators together provided @asynchronous is first, but @asynchronous will coroutine. 108 Chapter 4. Documentation Tornado Documentation, Release 4.5.3 New in version 4.5. Legacy interface Before support for Futures was introduced in Tornado 3.0, coroutines used subclasses of

methods; for coroutines, use the @gen.coroutine dec- orator without @asynchronous. (It is legal for legacy reasons to use the two decorators together provided @asynchronous is first, but @asynchronous will coroutine. New in version 4.5. 116 Chapter 5. Documentation Tornado Documentation, Release 5.1.1 Legacy interface Before support for Futures was introduced in Tornado 3.0, coroutines used subclasses of

__call__( self, request: httputil.HTTPServerRequest ) -> Optional[Awaitable[None]]: # Legacy HTTPServer interface dispatcher = self.find_handler(request) return dispatcher.execute()

__call__( self, request: httputil.HTTPServerRequest ) -> Optional[Awaitable[None]]: # Legacy HTTPServer interface dispatcher = self.find_handler(request) return dispatcher.execute()