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</li> </ul> </div> <div class="document"> <div class="documentwrapper"> <div class="bodywrapper"> <div class="body" role="main"> <section id="low-level-api-index"> <h1>Low-level API Index<a class="headerlink" href="#low-level-api-index" title="Permalink to this headline">¶</a></h1> <p>This page lists all low-level asyncio APIs.</p> <section id="obtaining-the-event-loop"> <h2>Obtaining the Event Loop<a class="headerlink" href="#obtaining-the-event-loop" title="Permalink to this headline">¶</a></h2> <table class="colwidths-given full-width-table docutils align-default"> <colgroup> <col style="width: 50%" /> <col style="width: 50%" /> </colgroup> <tbody> <tr class="row-odd"><td><p><a class="reference internal" href="asyncio-eventloop.html#asyncio.get_running_loop" title="asyncio.get_running_loop"><code class="xref py py-func docutils literal notranslate"><span class="pre">asyncio.get_running_loop()</span></code></a></p></td> <td><p>The <strong>preferred</strong> function to get the running event loop.</p></td> </tr> <tr class="row-even"><td><p><a class="reference internal" href="asyncio-eventloop.html#asyncio.get_event_loop" title="asyncio.get_event_loop"><code class="xref py py-func docutils literal notranslate"><span class="pre">asyncio.get_event_loop()</span></code></a></p></td> <td><p>Get an event loop instance (running or current via the current policy).</p></td> </tr> <tr class="row-odd"><td><p><a class="reference internal" href="asyncio-eventloop.html#asyncio.set_event_loop" title="asyncio.set_event_loop"><code class="xref py py-func docutils literal notranslate"><span class="pre">asyncio.set_event_loop()</span></code></a></p></td> <td><p>Set the event loop as current via the current policy.</p></td> </tr> <tr class="row-even"><td><p><a class="reference internal" href="asyncio-eventloop.html#asyncio.new_event_loop" title="asyncio.new_event_loop"><code class="xref py py-func docutils literal notranslate"><span class="pre">asyncio.new_event_loop()</span></code></a></p></td> <td><p>Create a new event loop.</p></td> </tr> </tbody> </table> <p class="rubric">Examples</p> <ul class="simple"> <li><p><a class="reference internal" href="asyncio-future.html#asyncio-example-future"><span class="std std-ref">Using asyncio.get_running_loop()</span></a>.</p></li> </ul> </section> <section id="event-loop-methods"> <h2>Event Loop Methods<a class="headerlink" href="#event-loop-methods" title="Permalink to this headline">¶</a></h2> <p>See also the main documentation section about the <a class="reference internal" href="asyncio-eventloop.html#asyncio-event-loop-methods"><span class="std std-ref">Event Loop Methods</span></a>.</p> <p class="rubric">Lifecycle</p> <table class="colwidths-given full-width-table docutils align-default"> <colgroup> <col style="width: 50%" /> <col style="width: 50%" /> </colgroup> <tbody> <tr class="row-odd"><td><p><a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.run_until_complete" title="asyncio.loop.run_until_complete"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.run_until_complete()</span></code></a></p></td> <td><p>Run a Future/Task/awaitable until complete.</p></td> </tr> <tr class="row-even"><td><p><a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.run_forever" title="asyncio.loop.run_forever"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.run_forever()</span></code></a></p></td> <td><p>Run the event loop forever.</p></td> </tr> <tr class="row-odd"><td><p><a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.stop" title="asyncio.loop.stop"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.stop()</span></code></a></p></td> <td><p>Stop the event loop.</p></td> </tr> <tr class="row-even"><td><p><a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.close" title="asyncio.loop.close"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.close()</span></code></a></p></td> <td><p>Close the event loop.</p></td> </tr> <tr class="row-odd"><td><p><a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.is_running" title="asyncio.loop.is_running"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.is_running()</span></code></a></p></td> <td><p>Return <code class="docutils literal notranslate"><span class="pre">True</span></code> if the event loop is running.</p></td> </tr> <tr class="row-even"><td><p><a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.is_closed" title="asyncio.loop.is_closed"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.is_closed()</span></code></a></p></td> <td><p>Return <code class="docutils literal notranslate"><span class="pre">True</span></code> if the event loop is closed.</p></td> </tr> <tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">await</span></code> <a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.shutdown_asyncgens" title="asyncio.loop.shutdown_asyncgens"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.shutdown_asyncgens()</span></code></a></p></td> <td><p>Close asynchronous generators.</p></td> </tr> </tbody> </table> <p class="rubric">Debugging</p> <table class="colwidths-given full-width-table docutils align-default"> <colgroup> <col style="width: 50%" /> <col style="width: 50%" /> </colgroup> <tbody> <tr class="row-odd"><td><p><a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.set_debug" title="asyncio.loop.set_debug"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.set_debug()</span></code></a></p></td> <td><p>Enable or disable the debug mode.</p></td> </tr> <tr class="row-even"><td><p><a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.get_debug" title="asyncio.loop.get_debug"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.get_debug()</span></code></a></p></td> <td><p>Get the current debug mode.</p></td> </tr> </tbody> </table> <p class="rubric">Scheduling Callbacks</p> <table class="colwidths-given full-width-table docutils align-default"> <colgroup> <col style="width: 50%" /> <col style="width: 50%" /> </colgroup> <tbody> <tr class="row-odd"><td><p><a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.call_soon" title="asyncio.loop.call_soon"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.call_soon()</span></code></a></p></td> <td><p>Invoke a callback soon.</p></td> </tr> <tr class="row-even"><td><p><a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.call_soon_threadsafe" title="asyncio.loop.call_soon_threadsafe"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.call_soon_threadsafe()</span></code></a></p></td> <td><p>A thread-safe variant of <a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.call_soon" title="asyncio.loop.call_soon"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.call_soon()</span></code></a>.</p></td> </tr> <tr class="row-odd"><td><p><a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.call_later" title="asyncio.loop.call_later"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.call_later()</span></code></a></p></td> <td><p>Invoke a callback <em>after</em> the given time.</p></td> </tr> <tr class="row-even"><td><p><a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.call_at" title="asyncio.loop.call_at"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.call_at()</span></code></a></p></td> <td><p>Invoke a callback <em>at</em> the given time.</p></td> </tr> </tbody> </table> <p class="rubric">Thread/Process Pool</p> <table class="colwidths-given full-width-table docutils align-default"> <colgroup> <col style="width: 50%" /> <col style="width: 50%" /> </colgroup> <tbody> <tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">await</span></code> <a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.run_in_executor" title="asyncio.loop.run_in_executor"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.run_in_executor()</span></code></a></p></td> <td><p>Run a CPU-bound or other blocking function in a <a class="reference internal" href="concurrent.futures.html#module-concurrent.futures" title="concurrent.futures: Execute computations concurrently using threads or processes."><code class="xref py py-mod docutils literal notranslate"><span class="pre">concurrent.futures</span></code></a> executor.</p></td> </tr> <tr class="row-even"><td><p><a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.set_default_executor" title="asyncio.loop.set_default_executor"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.set_default_executor()</span></code></a></p></td> <td><p>Set the default executor for <a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.run_in_executor" title="asyncio.loop.run_in_executor"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.run_in_executor()</span></code></a>.</p></td> </tr> </tbody> </table> <p class="rubric">Tasks and Futures</p> <table class="colwidths-given full-width-table docutils align-default"> <colgroup> <col style="width: 50%" /> <col style="width: 50%" /> </colgroup> <tbody> <tr class="row-odd"><td><p><a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.create_future" title="asyncio.loop.create_future"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.create_future()</span></code></a></p></td> <td><p>Create a <a class="reference internal" href="asyncio-future.html#asyncio.Future" title="asyncio.Future"><code class="xref py py-class docutils literal notranslate"><span class="pre">Future</span></code></a> object.</p></td> </tr> <tr class="row-even"><td><p><a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.create_task" title="asyncio.loop.create_task"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.create_task()</span></code></a></p></td> <td><p>Schedule coroutine as a <a class="reference internal" href="asyncio-task.html#asyncio.Task" title="asyncio.Task"><code class="xref py py-class docutils literal notranslate"><span class="pre">Task</span></code></a>.</p></td> </tr> <tr class="row-odd"><td><p><a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.set_task_factory" title="asyncio.loop.set_task_factory"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.set_task_factory()</span></code></a></p></td> <td><p>Set a factory used by <a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.create_task" title="asyncio.loop.create_task"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.create_task()</span></code></a> to create <a class="reference internal" href="asyncio-task.html#asyncio.Task" title="asyncio.Task"><code class="xref py py-class docutils literal notranslate"><span class="pre">Tasks</span></code></a>.</p></td> </tr> <tr class="row-even"><td><p><a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.get_task_factory" title="asyncio.loop.get_task_factory"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.get_task_factory()</span></code></a></p></td> <td><p>Get the factory <a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.create_task" title="asyncio.loop.create_task"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.create_task()</span></code></a> uses to create <a class="reference internal" href="asyncio-task.html#asyncio.Task" title="asyncio.Task"><code class="xref py py-class docutils literal notranslate"><span class="pre">Tasks</span></code></a>.</p></td> </tr> </tbody> </table> <p class="rubric">DNS</p> <table class="colwidths-given full-width-table docutils align-default"> <colgroup> <col style="width: 50%" /> <col style="width: 50%" /> </colgroup> <tbody> <tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">await</span></code> <a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.getaddrinfo" title="asyncio.loop.getaddrinfo"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.getaddrinfo()</span></code></a></p></td> <td><p>Asynchronous version of <a class="reference internal" href="socket.html#socket.getaddrinfo" title="socket.getaddrinfo"><code class="xref py py-meth docutils literal notranslate"><span class="pre">socket.getaddrinfo()</span></code></a>.</p></td> </tr> <tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">await</span></code> <a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.getnameinfo" title="asyncio.loop.getnameinfo"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.getnameinfo()</span></code></a></p></td> <td><p>Asynchronous version of <a class="reference internal" href="socket.html#socket.getnameinfo" title="socket.getnameinfo"><code class="xref py py-meth docutils literal notranslate"><span class="pre">socket.getnameinfo()</span></code></a>.</p></td> </tr> </tbody> </table> <p class="rubric">Networking and IPC</p> <table class="colwidths-given full-width-table docutils align-default"> <colgroup> <col style="width: 50%" /> <col style="width: 50%" /> </colgroup> <tbody> <tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">await</span></code> <a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.create_connection" title="asyncio.loop.create_connection"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.create_connection()</span></code></a></p></td> <td><p>Open a TCP connection.</p></td> </tr> <tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">await</span></code> <a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.create_server" title="asyncio.loop.create_server"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.create_server()</span></code></a></p></td> <td><p>Create a TCP server.</p></td> </tr> <tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">await</span></code> <a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.create_unix_connection" title="asyncio.loop.create_unix_connection"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.create_unix_connection()</span></code></a></p></td> <td><p>Open a Unix socket connection.</p></td> </tr> <tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">await</span></code> <a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.create_unix_server" title="asyncio.loop.create_unix_server"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.create_unix_server()</span></code></a></p></td> <td><p>Create a Unix socket server.</p></td> </tr> <tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">await</span></code> <a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.connect_accepted_socket" title="asyncio.loop.connect_accepted_socket"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.connect_accepted_socket()</span></code></a></p></td> <td><p>Wrap a <a class="reference internal" href="socket.html#socket.socket" title="socket.socket"><code class="xref py py-class docutils literal notranslate"><span class="pre">socket</span></code></a> into a <code class="docutils literal notranslate"><span class="pre">(transport,</span> <span class="pre">protocol)</span></code> pair.</p></td> </tr> <tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">await</span></code> <a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.create_datagram_endpoint" title="asyncio.loop.create_datagram_endpoint"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.create_datagram_endpoint()</span></code></a></p></td> <td><p>Open a datagram (UDP) connection.</p></td> </tr> <tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">await</span></code> <a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.sendfile" title="asyncio.loop.sendfile"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.sendfile()</span></code></a></p></td> <td><p>Send a file over a transport.</p></td> </tr> <tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">await</span></code> <a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.start_tls" title="asyncio.loop.start_tls"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.start_tls()</span></code></a></p></td> <td><p>Upgrade an existing connection to TLS.</p></td> </tr> <tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">await</span></code> <a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.connect_read_pipe" title="asyncio.loop.connect_read_pipe"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.connect_read_pipe()</span></code></a></p></td> <td><p>Wrap a read end of a pipe into a <code class="docutils literal notranslate"><span class="pre">(transport,</span> <span class="pre">protocol)</span></code> pair.</p></td> </tr> <tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">await</span></code> <a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.connect_write_pipe" title="asyncio.loop.connect_write_pipe"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.connect_write_pipe()</span></code></a></p></td> <td><p>Wrap a write end of a pipe into a <code class="docutils literal notranslate"><span class="pre">(transport,</span> <span class="pre">protocol)</span></code> pair.</p></td> </tr> </tbody> </table> <p class="rubric">Sockets</p> <table class="colwidths-given full-width-table docutils align-default"> <colgroup> <col style="width: 50%" /> <col style="width: 50%" /> </colgroup> <tbody> <tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">await</span></code> <a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.sock_recv" title="asyncio.loop.sock_recv"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.sock_recv()</span></code></a></p></td> <td><p>Receive data from the <a class="reference internal" href="socket.html#socket.socket" title="socket.socket"><code class="xref py py-class docutils literal notranslate"><span class="pre">socket</span></code></a>.</p></td> </tr> <tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">await</span></code> <a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.sock_recv_into" title="asyncio.loop.sock_recv_into"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.sock_recv_into()</span></code></a></p></td> <td><p>Receive data from the <a class="reference internal" href="socket.html#socket.socket" title="socket.socket"><code class="xref py py-class docutils literal notranslate"><span class="pre">socket</span></code></a> into a buffer.</p></td> </tr> <tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">await</span></code> <a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.sock_sendall" title="asyncio.loop.sock_sendall"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.sock_sendall()</span></code></a></p></td> <td><p>Send data to the <a class="reference internal" href="socket.html#socket.socket" title="socket.socket"><code class="xref py py-class docutils literal notranslate"><span class="pre">socket</span></code></a>.</p></td> </tr> <tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">await</span></code> <a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.sock_connect" title="asyncio.loop.sock_connect"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.sock_connect()</span></code></a></p></td> <td><p>Connect the <a class="reference internal" href="socket.html#socket.socket" title="socket.socket"><code class="xref py py-class docutils literal notranslate"><span class="pre">socket</span></code></a>.</p></td> </tr> <tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">await</span></code> <a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.sock_accept" title="asyncio.loop.sock_accept"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.sock_accept()</span></code></a></p></td> <td><p>Accept a <a class="reference internal" href="socket.html#socket.socket" title="socket.socket"><code class="xref py py-class docutils literal notranslate"><span class="pre">socket</span></code></a> connection.</p></td> </tr> <tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">await</span></code> <a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.sock_sendfile" title="asyncio.loop.sock_sendfile"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.sock_sendfile()</span></code></a></p></td> <td><p>Send a file over the <a class="reference internal" href="socket.html#socket.socket" title="socket.socket"><code class="xref py py-class docutils literal notranslate"><span class="pre">socket</span></code></a>.</p></td> </tr> <tr class="row-odd"><td><p><a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.add_reader" title="asyncio.loop.add_reader"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.add_reader()</span></code></a></p></td> <td><p>Start watching a file descriptor for read availability.</p></td> </tr> <tr class="row-even"><td><p><a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.remove_reader" title="asyncio.loop.remove_reader"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.remove_reader()</span></code></a></p></td> <td><p>Stop watching a file descriptor for read availability.</p></td> </tr> <tr class="row-odd"><td><p><a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.add_writer" title="asyncio.loop.add_writer"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.add_writer()</span></code></a></p></td> <td><p>Start watching a file descriptor for write availability.</p></td> </tr> <tr class="row-even"><td><p><a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.remove_writer" title="asyncio.loop.remove_writer"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.remove_writer()</span></code></a></p></td> <td><p>Stop watching a file descriptor for write availability.</p></td> </tr> </tbody> </table> <p class="rubric">Unix Signals</p> <table class="colwidths-given full-width-table docutils align-default"> <colgroup> <col style="width: 50%" /> <col style="width: 50%" /> </colgroup> <tbody> <tr class="row-odd"><td><p><a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.add_signal_handler" title="asyncio.loop.add_signal_handler"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.add_signal_handler()</span></code></a></p></td> <td><p>Add a handler for a <a class="reference internal" href="signal.html#module-signal" title="signal: Set handlers for asynchronous events."><code class="xref py py-mod docutils literal notranslate"><span class="pre">signal</span></code></a>.</p></td> </tr> <tr class="row-even"><td><p><a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.remove_signal_handler" title="asyncio.loop.remove_signal_handler"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.remove_signal_handler()</span></code></a></p></td> <td><p>Remove a handler for a <a class="reference internal" href="signal.html#module-signal" title="signal: Set handlers for asynchronous events."><code class="xref py py-mod docutils literal notranslate"><span class="pre">signal</span></code></a>.</p></td> </tr> </tbody> </table> <p class="rubric">Subprocesses</p> <table class="colwidths-given full-width-table docutils align-default"> <colgroup> <col style="width: 50%" /> <col style="width: 50%" /> </colgroup> <tbody> <tr class="row-odd"><td><p><a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.subprocess_exec" title="asyncio.loop.subprocess_exec"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.subprocess_exec()</span></code></a></p></td> <td><p>Spawn a subprocess.</p></td> </tr> <tr class="row-even"><td><p><a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.subprocess_shell" title="asyncio.loop.subprocess_shell"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.subprocess_shell()</span></code></a></p></td> <td><p>Spawn a subprocess from a shell command.</p></td> </tr> </tbody> </table> <p class="rubric">Error Handling</p> <table class="colwidths-given full-width-table docutils align-default"> <colgroup> <col style="width: 50%" /> <col style="width: 50%" /> </colgroup> <tbody> <tr class="row-odd"><td><p><a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.call_exception_handler" title="asyncio.loop.call_exception_handler"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.call_exception_handler()</span></code></a></p></td> <td><p>Call the exception handler.</p></td> </tr> <tr class="row-even"><td><p><a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.set_exception_handler" title="asyncio.loop.set_exception_handler"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.set_exception_handler()</span></code></a></p></td> <td><p>Set a new exception handler.</p></td> </tr> <tr class="row-odd"><td><p><a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.get_exception_handler" title="asyncio.loop.get_exception_handler"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.get_exception_handler()</span></code></a></p></td> <td><p>Get the current exception handler.</p></td> </tr> <tr class="row-even"><td><p><a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.default_exception_handler" title="asyncio.loop.default_exception_handler"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.default_exception_handler()</span></code></a></p></td> <td><p>The default exception handler implementation.</p></td> </tr> </tbody> </table> <p class="rubric">Examples</p> <ul class="simple"> <li><p><a class="reference internal" href="asyncio-eventloop.html#asyncio-example-lowlevel-helloworld"><span class="std std-ref">Using asyncio.get_event_loop() and loop.run_forever()</span></a>.</p></li> <li><p><a class="reference internal" href="asyncio-eventloop.html#asyncio-example-call-later"><span class="std std-ref">Using loop.call_later()</span></a>.</p></li> <li><p>Using <code class="docutils literal notranslate"><span class="pre">loop.create_connection()</span></code> to implement <a class="reference internal" href="asyncio-protocol.html#asyncio-example-tcp-echo-client-protocol"><span class="std std-ref">an echo-client</span></a>.</p></li> <li><p>Using <code class="docutils literal notranslate"><span class="pre">loop.create_connection()</span></code> to <a class="reference internal" href="asyncio-protocol.html#asyncio-example-create-connection"><span class="std std-ref">connect a socket</span></a>.</p></li> <li><p><a class="reference internal" href="asyncio-eventloop.html#asyncio-example-watch-fd"><span class="std std-ref">Using add_reader() to watch an FD for read events</span></a>.</p></li> <li><p><a class="reference internal" href="asyncio-eventloop.html#asyncio-example-unix-signals"><span class="std std-ref">Using loop.add_signal_handler()</span></a>.</p></li> <li><p><a class="reference internal" href="asyncio-protocol.html#asyncio-example-subprocess-proto"><span class="std std-ref">Using loop.subprocess_exec()</span></a>.</p></li> </ul> </section> <section id="transports"> <h2>Transports<a class="headerlink" href="#transports" title="Permalink to this headline">¶</a></h2> <p>All transports implement the following methods:</p> <table class="colwidths-given full-width-table docutils align-default"> <colgroup> <col style="width: 50%" /> <col style="width: 50%" /> </colgroup> <tbody> <tr class="row-odd"><td><p><a class="reference internal" href="asyncio-protocol.html#asyncio.BaseTransport.close" title="asyncio.BaseTransport.close"><code class="xref py py-meth docutils literal notranslate"><span class="pre">transport.close()</span></code></a></p></td> <td><p>Close the transport.</p></td> </tr> <tr class="row-even"><td><p><a class="reference internal" href="asyncio-protocol.html#asyncio.BaseTransport.is_closing" title="asyncio.BaseTransport.is_closing"><code class="xref py py-meth docutils literal notranslate"><span class="pre">transport.is_closing()</span></code></a></p></td> <td><p>Return <code class="docutils literal notranslate"><span class="pre">True</span></code> if the transport is closing or is closed.</p></td> </tr> <tr class="row-odd"><td><p><a class="reference internal" href="asyncio-protocol.html#asyncio.BaseTransport.get_extra_info" title="asyncio.BaseTransport.get_extra_info"><code class="xref py py-meth docutils literal notranslate"><span class="pre">transport.get_extra_info()</span></code></a></p></td> <td><p>Request for information about the transport.</p></td> </tr> <tr class="row-even"><td><p><a class="reference internal" href="asyncio-protocol.html#asyncio.BaseTransport.set_protocol" title="asyncio.BaseTransport.set_protocol"><code class="xref py py-meth docutils literal notranslate"><span class="pre">transport.set_protocol()</span></code></a></p></td> <td><p>Set a new protocol.</p></td> </tr> <tr class="row-odd"><td><p><a class="reference internal" href="asyncio-protocol.html#asyncio.BaseTransport.get_protocol" title="asyncio.BaseTransport.get_protocol"><code class="xref py py-meth docutils literal notranslate"><span class="pre">transport.get_protocol()</span></code></a></p></td> <td><p>Return the current protocol.</p></td> </tr> </tbody> </table> <p>Transports that can receive data (TCP and Unix connections, pipes, etc). Returned from methods like <a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.create_connection" title="asyncio.loop.create_connection"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.create_connection()</span></code></a>, <a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.create_unix_connection" title="asyncio.loop.create_unix_connection"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.create_unix_connection()</span></code></a>, <a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.connect_read_pipe" title="asyncio.loop.connect_read_pipe"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.connect_read_pipe()</span></code></a>, etc:</p> <p class="rubric">Read Transports</p> <table class="colwidths-given full-width-table docutils align-default"> <colgroup> <col style="width: 50%" /> <col style="width: 50%" /> </colgroup> <tbody> <tr class="row-odd"><td><p><a class="reference internal" href="asyncio-protocol.html#asyncio.ReadTransport.is_reading" title="asyncio.ReadTransport.is_reading"><code class="xref py py-meth docutils literal notranslate"><span class="pre">transport.is_reading()</span></code></a></p></td> <td><p>Return <code class="docutils literal notranslate"><span class="pre">True</span></code> if the transport is receiving.</p></td> </tr> <tr class="row-even"><td><p><a class="reference internal" href="asyncio-protocol.html#asyncio.ReadTransport.pause_reading" title="asyncio.ReadTransport.pause_reading"><code class="xref py py-meth docutils literal notranslate"><span class="pre">transport.pause_reading()</span></code></a></p></td> <td><p>Pause receiving.</p></td> </tr> <tr class="row-odd"><td><p><a class="reference internal" href="asyncio-protocol.html#asyncio.ReadTransport.resume_reading" title="asyncio.ReadTransport.resume_reading"><code class="xref py py-meth docutils literal notranslate"><span class="pre">transport.resume_reading()</span></code></a></p></td> <td><p>Resume receiving.</p></td> </tr> </tbody> </table> <p>Transports that can Send data (TCP and Unix connections, pipes, etc). Returned from methods like <a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.create_connection" title="asyncio.loop.create_connection"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.create_connection()</span></code></a>, <a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.create_unix_connection" title="asyncio.loop.create_unix_connection"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.create_unix_connection()</span></code></a>, <a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.connect_write_pipe" title="asyncio.loop.connect_write_pipe"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.connect_write_pipe()</span></code></a>, etc:</p> <p class="rubric">Write Transports</p> <table class="colwidths-given full-width-table docutils align-default"> <colgroup> <col style="width: 50%" /> <col style="width: 50%" /> </colgroup> <tbody> <tr class="row-odd"><td><p><a class="reference internal" href="asyncio-protocol.html#asyncio.WriteTransport.write" title="asyncio.WriteTransport.write"><code class="xref py py-meth docutils literal notranslate"><span class="pre">transport.write()</span></code></a></p></td> <td><p>Write data to the transport.</p></td> </tr> <tr class="row-even"><td><p><a class="reference internal" href="asyncio-protocol.html#asyncio.WriteTransport.writelines" title="asyncio.WriteTransport.writelines"><code class="xref py py-meth docutils literal notranslate"><span class="pre">transport.writelines()</span></code></a></p></td> <td><p>Write buffers to the transport.</p></td> </tr> <tr class="row-odd"><td><p><a class="reference internal" href="asyncio-protocol.html#asyncio.WriteTransport.can_write_eof" title="asyncio.WriteTransport.can_write_eof"><code class="xref py py-meth docutils literal notranslate"><span class="pre">transport.can_write_eof()</span></code></a></p></td> <td><p>Return <a class="reference internal" href="constants.html#True" title="True"><code class="xref py py-const docutils literal notranslate"><span class="pre">True</span></code></a> if the transport supports sending EOF.</p></td> </tr> <tr class="row-even"><td><p><a class="reference internal" href="asyncio-protocol.html#asyncio.WriteTransport.write_eof" title="asyncio.WriteTransport.write_eof"><code class="xref py py-meth docutils literal notranslate"><span class="pre">transport.write_eof()</span></code></a></p></td> <td><p>Close and send EOF after flushing buffered data.</p></td> </tr> <tr class="row-odd"><td><p><a class="reference internal" href="asyncio-protocol.html#asyncio.WriteTransport.abort" title="asyncio.WriteTransport.abort"><code class="xref py py-meth docutils literal notranslate"><span class="pre">transport.abort()</span></code></a></p></td> <td><p>Close the transport immediately.</p></td> </tr> <tr class="row-even"><td><p><a class="reference internal" href="asyncio-protocol.html#asyncio.WriteTransport.get_write_buffer_size" title="asyncio.WriteTransport.get_write_buffer_size"><code class="xref py py-meth docutils literal notranslate"><span class="pre">transport.get_write_buffer_size()</span></code></a></p></td> <td><p>Return the current size of the output buffer.</p></td> </tr> <tr class="row-odd"><td><p><a class="reference internal" href="asyncio-protocol.html#asyncio.WriteTransport.get_write_buffer_limits" title="asyncio.WriteTransport.get_write_buffer_limits"><code class="xref py py-meth docutils literal notranslate"><span class="pre">transport.get_write_buffer_limits()</span></code></a></p></td> <td><p>Return high and low water marks for write flow control.</p></td> </tr> <tr class="row-even"><td><p><a class="reference internal" href="asyncio-protocol.html#asyncio.WriteTransport.set_write_buffer_limits" title="asyncio.WriteTransport.set_write_buffer_limits"><code class="xref py py-meth docutils literal notranslate"><span class="pre">transport.set_write_buffer_limits()</span></code></a></p></td> <td><p>Set new high and low water marks for write flow control.</p></td> </tr> </tbody> </table> <p>Transports returned by <a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.create_datagram_endpoint" title="asyncio.loop.create_datagram_endpoint"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.create_datagram_endpoint()</span></code></a>:</p> <p class="rubric">Datagram Transports</p> <table class="colwidths-given full-width-table docutils align-default"> <colgroup> <col style="width: 50%" /> <col style="width: 50%" /> </colgroup> <tbody> <tr class="row-odd"><td><p><a class="reference internal" href="asyncio-protocol.html#asyncio.DatagramTransport.sendto" title="asyncio.DatagramTransport.sendto"><code class="xref py py-meth docutils literal notranslate"><span class="pre">transport.sendto()</span></code></a></p></td> <td><p>Send data to the remote peer.</p></td> </tr> <tr class="row-even"><td><p><a class="reference internal" href="asyncio-protocol.html#asyncio.DatagramTransport.abort" title="asyncio.DatagramTransport.abort"><code class="xref py py-meth docutils literal notranslate"><span class="pre">transport.abort()</span></code></a></p></td> <td><p>Close the transport immediately.</p></td> </tr> </tbody> </table> <p>Low-level transport abstraction over subprocesses. Returned by <a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.subprocess_exec" title="asyncio.loop.subprocess_exec"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.subprocess_exec()</span></code></a> and <a class="reference internal" href="asyncio-eventloop.html#asyncio.loop.subprocess_shell" title="asyncio.loop.subprocess_shell"><code class="xref py py-meth docutils literal notranslate"><span class="pre">loop.subprocess_shell()</span></code></a>:</p> <p class="rubric">Subprocess Transports</p> <table class="colwidths-given full-width-table docutils align-default"> <colgroup> <col style="width: 50%" /> <col style="width: 50%" /> </colgroup> <tbody> <tr class="row-odd"><td><p><a class="reference internal" href="asyncio-protocol.html#asyncio.SubprocessTransport.get_pid" title="asyncio.SubprocessTransport.get_pid"><code class="xref py py-meth docutils literal notranslate"><span class="pre">transport.get_pid()</span></code></a></p></td> <td><p>Return the subprocess process id.</p></td> </tr> <tr class="row-even"><td><p><a class="reference internal" href="asyncio-protocol.html#asyncio.SubprocessTransport.get_pipe_transport" title="asyncio.SubprocessTransport.get_pipe_transport"><code class="xref py py-meth docutils literal notranslate"><span class="pre">transport.get_pipe_transport()</span></code></a></p></td> <td><p>Return the transport for the requested communication pipe (<em>stdin</em>, <em>stdout</em>, or <em>stderr</em>).</p></td> </tr> <tr class="row-odd"><td><p><a class="reference internal" href="asyncio-protocol.html#asyncio.SubprocessTransport.get_returncode" title="asyncio.SubprocessTransport.get_returncode"><code class="xref py py-meth docutils literal notranslate"><span class="pre">transport.get_returncode()</span></code></a></p></td> <td><p>Return the subprocess return code.</p></td> </tr> <tr class="row-even"><td><p><a class="reference internal" href="asyncio-protocol.html#asyncio.SubprocessTransport.kill" title="asyncio.SubprocessTransport.kill"><code class="xref py py-meth docutils literal notranslate"><span class="pre">transport.kill()</span></code></a></p></td> <td><p>Kill the subprocess.</p></td> </tr> <tr class="row-odd"><td><p><a class="reference internal" href="asyncio-protocol.html#asyncio.SubprocessTransport.send_signal" title="asyncio.SubprocessTransport.send_signal"><code class="xref py py-meth docutils literal notranslate"><span class="pre">transport.send_signal()</span></code></a></p></td> <td><p>Send a signal to the subprocess.</p></td> </tr> <tr class="row-even"><td><p><a class="reference internal" href="asyncio-protocol.html#asyncio.SubprocessTransport.terminate" title="asyncio.SubprocessTransport.terminate"><code class="xref py py-meth docutils literal notranslate"><span class="pre">transport.terminate()</span></code></a></p></td> <td><p>Stop the subprocess.</p></td> </tr> <tr class="row-odd"><td><p><a class="reference internal" href="asyncio-protocol.html#asyncio.SubprocessTransport.close" title="asyncio.SubprocessTransport.close"><code class="xref py py-meth docutils literal notranslate"><span class="pre">transport.close()</span></code></a></p></td> <td><p>Kill the subprocess and close all pipes.</p></td> </tr> </tbody> </table> </section> <section id="protocols"> <h2>Protocols<a class="headerlink" href="#protocols" title="Permalink to this headline">¶</a></h2> <p>Protocol classes can implement the following <strong>callback methods</strong>:</p> <table class="colwidths-given full-width-table docutils align-default"> <colgroup> <col style="width: 50%" /> <col style="width: 50%" /> </colgroup> <tbody> <tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">callback</span></code> <a class="reference internal" href="asyncio-protocol.html#asyncio.BaseProtocol.connection_made" title="asyncio.BaseProtocol.connection_made"><code class="xref py py-meth docutils literal notranslate"><span class="pre">connection_made()</span></code></a></p></td> <td><p>Called when a connection is made.</p></td> </tr> <tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">callback</span></code> <a class="reference internal" href="asyncio-protocol.html#asyncio.BaseProtocol.connection_lost" title="asyncio.BaseProtocol.connection_lost"><code class="xref py py-meth docutils literal notranslate"><span class="pre">connection_lost()</span></code></a></p></td> <td><p>Called when the connection is lost or closed.</p></td> </tr> <tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">callback</span></code> <a class="reference internal" href="asyncio-protocol.html#asyncio.BaseProtocol.pause_writing" title="asyncio.BaseProtocol.pause_writing"><code class="xref py py-meth docutils literal notranslate"><span class="pre">pause_writing()</span></code></a></p></td> <td><p>Called when the transport’s buffer goes over the high water mark.</p></td> </tr> <tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">callback</span></code> <a class="reference internal" href="asyncio-protocol.html#asyncio.BaseProtocol.resume_writing" title="asyncio.BaseProtocol.resume_writing"><code class="xref py py-meth docutils literal notranslate"><span class="pre">resume_writing()</span></code></a></p></td> <td><p>Called when the transport’s buffer drains below the low water mark.</p></td> </tr> </tbody> </table> <p class="rubric">Streaming Protocols (TCP, Unix Sockets, Pipes)</p> <table class="colwidths-given full-width-table docutils align-default"> <colgroup> <col style="width: 50%" /> <col style="width: 50%" /> </colgroup> <tbody> <tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">callback</span></code> <a class="reference internal" href="asyncio-protocol.html#asyncio.Protocol.data_received" title="asyncio.Protocol.data_received"><code class="xref py py-meth docutils literal notranslate"><span class="pre">data_received()</span></code></a></p></td> <td><p>Called when some data is received.</p></td> </tr> <tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">callback</span></code> <a class="reference internal" href="asyncio-protocol.html#asyncio.Protocol.eof_received" title="asyncio.Protocol.eof_received"><code class="xref py py-meth docutils literal notranslate"><span class="pre">eof_received()</span></code></a></p></td> <td><p>Called when an EOF is received.</p></td> </tr> </tbody> </table> <p class="rubric">Buffered Streaming Protocols</p> <table class="colwidths-given full-width-table docutils align-default"> <colgroup> <col style="width: 50%" /> <col style="width: 50%" /> </colgroup> <tbody> <tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">callback</span></code> <a class="reference internal" href="asyncio-protocol.html#asyncio.BufferedProtocol.get_buffer" title="asyncio.BufferedProtocol.get_buffer"><code class="xref py py-meth docutils literal notranslate"><span class="pre">get_buffer()</span></code></a></p></td> <td><p>Called to allocate a new receive buffer.</p></td> </tr> <tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">callback</span></code> <a class="reference internal" href="asyncio-protocol.html#asyncio.BufferedProtocol.buffer_updated" title="asyncio.BufferedProtocol.buffer_updated"><code class="xref py py-meth docutils literal notranslate"><span class="pre">buffer_updated()</span></code></a></p></td> <td><p>Called when the buffer was updated with the received data.</p></td> </tr> <tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">callback</span></code> <a class="reference internal" href="asyncio-protocol.html#asyncio.BufferedProtocol.eof_received" title="asyncio.BufferedProtocol.eof_received"><code class="xref py py-meth docutils literal notranslate"><span class="pre">eof_received()</span></code></a></p></td> <td><p>Called when an EOF is received.</p></td> </tr> </tbody> </table> <p class="rubric">Datagram Protocols</p> <table class="colwidths-given full-width-table docutils align-default"> <colgroup> <col style="width: 50%" /> <col style="width: 50%" /> </colgroup> <tbody> <tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">callback</span></code> <a class="reference internal" href="asyncio-protocol.html#asyncio.DatagramProtocol.datagram_received" title="asyncio.DatagramProtocol.datagram_received"><code class="xref py py-meth docutils literal notranslate"><span class="pre">datagram_received()</span></code></a></p></td> <td><p>Called when a datagram is received.</p></td> </tr> <tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">callback</span></code> <a class="reference internal" href="asyncio-protocol.html#asyncio.DatagramProtocol.error_received" title="asyncio.DatagramProtocol.error_received"><code class="xref py py-meth docutils literal notranslate"><span class="pre">error_received()</span></code></a></p></td> <td><p>Called when a previous send or receive operation raises an <a class="reference internal" href="exceptions.html#OSError" title="OSError"><code class="xref py py-class docutils literal notranslate"><span class="pre">OSError</span></code></a>.</p></td> </tr> </tbody> </table> <p class="rubric">Subprocess Protocols</p> <table class="colwidths-given full-width-table docutils align-default"> <colgroup> <col style="width: 50%" /> <col style="width: 50%" /> </colgroup> <tbody> <tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">callback</span></code> <a class="reference internal" href="asyncio-protocol.html#asyncio.SubprocessProtocol.pipe_data_received" title="asyncio.SubprocessProtocol.pipe_data_received"><code class="xref py py-meth docutils literal notranslate"><span class="pre">pipe_data_received()</span></code></a></p></td> <td><p>Called when the child process writes data into its <em>stdout</em> or <em>stderr</em> pipe.</p></td> </tr> <tr class="row-even"><td><p><code class="docutils literal notranslate"><span class="pre">callback</span></code> <a class="reference internal" href="asyncio-protocol.html#asyncio.SubprocessProtocol.pipe_connection_lost" title="asyncio.SubprocessProtocol.pipe_connection_lost"><code class="xref py py-meth docutils literal notranslate"><span class="pre">pipe_connection_lost()</span></code></a></p></td> <td><p>Called when one of the pipes communicating with the child process is closed.</p></td> </tr> <tr class="row-odd"><td><p><code class="docutils literal notranslate"><span class="pre">callback</span></code> <a class="reference internal" href="asyncio-protocol.html#asyncio.SubprocessProtocol.process_exited" title="asyncio.SubprocessProtocol.process_exited"><code class="xref py py-meth docutils literal notranslate"><span class="pre">process_exited()</span></code></a></p></td> <td><p>Called when the child process has exited.</p></td> </tr> </tbody> </table> </section> <section id="event-loop-policies"> <h2>Event Loop Policies<a class="headerlink" href="#event-loop-policies" title="Permalink to this headline">¶</a></h2> <p>Policies is a low-level mechanism to alter the behavior of functions like <a class="reference internal" href="asyncio-eventloop.html#asyncio.get_event_loop" title="asyncio.get_event_loop"><code class="xref py py-func docutils literal notranslate"><span class="pre">asyncio.get_event_loop()</span></code></a>. See also the main <a class="reference internal" href="asyncio-policy.html#asyncio-policies"><span class="std std-ref">policies section</span></a> for more details.</p> <p class="rubric">Accessing Policies</p> <table class="colwidths-given full-width-table docutils align-default"> <colgroup> <col style="width: 50%" /> <col style="width: 50%" /> </colgroup> <tbody> <tr class="row-odd"><td><p><a class="reference internal" href="asyncio-policy.html#asyncio.get_event_loop_policy" title="asyncio.get_event_loop_policy"><code class="xref py py-meth docutils literal notranslate"><span class="pre">asyncio.get_event_loop_policy()</span></code></a></p></td> <td><p>Return the current process-wide policy.</p></td> </tr> <tr class="row-even"><td><p><a class="reference internal" href="asyncio-policy.html#asyncio.set_event_loop_policy" title="asyncio.set_event_loop_policy"><code class="xref py py-meth docutils literal notranslate"><span class="pre">asyncio.set_event_loop_policy()</span></code></a></p></td> <td><p>Set a new process-wide policy.</p></td> </tr> <tr class="row-odd"><td><p><a class="reference internal" href="asyncio-policy.html#asyncio.AbstractEventLoopPolicy" title="asyncio.AbstractEventLoopPolicy"><code class="xref py py-class docutils literal notranslate"><span class="pre">AbstractEventLoopPolicy</span></code></a></p></td> <td><p>Base class for policy objects.</p></td> </tr> </tbody> </table> </section> </section> <div class="clearer"></div> </div> </div> </div> <div class="sphinxsidebar" role="navigation" aria-label="main navigation"> <div class="sphinxsidebarwrapper"> <h3><a href="../contents.html">Table of Contents</a></h3> <ul> <li><a class="reference internal" href="#">Low-level API Index</a><ul> <li><a class="reference internal" href="#obtaining-the-event-loop">Obtaining the Event Loop</a></li> <li><a class="reference internal" href="#event-loop-methods">Event Loop Methods</a></li> <li><a class="reference internal" href="#transports">Transports</a></li> <li><a class="reference internal" href="#protocols">Protocols</a></li> <li><a class="reference internal" href="#event-loop-policies">Event Loop Policies</a></li> </ul> </li> </ul> <h4>Previous topic</h4> <p class="topless"><a href="asyncio-api-index.html" title="previous chapter">High-level API Index</a></p> <h4>Next topic</h4> <p class="topless"><a href="asyncio-dev.html" title="next chapter">Developing with asyncio</a></p> <div role="note" aria-label="source link"> <h3>This Page</h3> <ul class="this-page-menu"> <li><a href="../bugs.html">Report a Bug</a></li> <li> <a href="https://github.com/python/cpython/blob/3.10/Doc/library/asyncio-llapi-index.rst" rel="nofollow">Show Source </a> </li> </ul> </div> </div> </div> <div class="clearer"></div> </div> <div class="related" role="navigation" aria-label="related navigation"> <h3>Navigation</h3> <ul> <li class="right" style="margin-right: 10px"> <a href="../genindex.html" title="General Index" >index</a></li> <li class="right" > <a href="../py-modindex.html" title="Python Module Index" >modules</a> |</li> <li class="right" > <a href="asyncio-dev.html" title="Developing with asyncio" >next</a> |</li> <li class="right" > <a href="asyncio-api-index.html" title="High-level API Index" >previous</a> |</li> <li><img src="../_static/py.svg" alt="python logo" style="vertical-align: middle; 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