the browser • HTTP servers and clients ☐ tornado.httpserver — Non-blocking HTTP server • tornado.httpclient — Asynchronous HTTP client • tornado.httputil — Manipulate HTTP headers and URLs tornado with the await or yield keywords. ## Examples Here is a sample synchronous function: from tornado.httpclient import HTTPClient def synchronous_fetch(url): http_client = HTTPClient() response response.body And here is the same function rewritten asynchronously as a native coroutine: from tornado.httpclient importAsyncHTTPClient async def asynchronous_fetch(url): http_client =AsyncHTTPClient()

with the await or yield keywords. ## Examples Here is a sample synchronous function: from tornado.httpclient import HTTPClient def synchronous_fetch(url): http_client = HTTPClient() response = response.body And here is the same function rewritten asynchronously as a native coroutine: from tornado.httpclient importAsyncHTTPClient async def asynchronous_fetch(url): http_client =AsyncHTTPClient() body Or for compatibility with older versions of Python, using the tornado.gen module: from tornado.httpclient importAsyncHTTPClient from tornado import gen @gen.coroutine def async_fetch_gen(url):

with the await or yield keywords. ## Examples Here is a sample synchronous function: from tornado.httpclient import HTTPClient def synchronous_fetch(url): http_client = HTTPClient() response response.body And here is the same function rewritten asynchronously as a native coroutine: from tornado.httpclient importAsyncHTTPClient async def asynchronous_fetch(url): http_client =AsyncHTTPClient() body Or for compatibility with older versions of Python, using the tornado.gen module: from tornado.httpclient importAsyncHTTPClient from tornado import gen @gen.coroutine def async_fetch_gen(url):

with the await or yield keywords. ## Examples Here is a sample synchronous function: from tornado.httpclient import HTTPClient def synchronous_fetch(url): http_client = HTTPClient() response = response.body And here is the same function rewritten asynchronously as a native coroutine: from tornado.httpclient importAsyncHTTPClient async def asynchronous_fetch(url): http_client =AsyncHTTPClient() body Or for compatibility with older versions of Python, using the tornado.gen module: from tornado.httpclient importAsyncHTTPClient from tornado import gen @gen.coroutine def async_fetch_gen(url):

with the await or yield keywords. ## Examples Here is a sample synchronous function: from tornado.httpclient import HTTPClient def synchronous_fetch(url): http_client = HTTPClient() response = response.body And here is the same function rewritten asynchronously as a native coroutine: from tornado.httpclient importAsyncHTTPClient async def asynchronous_fetch(url): http_client =AsyncHTTPClient() body Or for compatibility with older versions of Python, using the tornado.gen module: from tornado.httpclient importAsyncHTTPClient from tornado import gen @gen.coroutine def async_fetch_gen(url):

with the await or yield keywords. ## Examples Here is a sample synchronous function: from tornado.httpclient import HTTPClient def synchronous_fetch(url): http_client = HTTPClient() response = response.body And here is the same function rewritten asynchronously as a native coroutine: from tornado.httpclient importAsyncHTTPClient async def asynchronous_fetch(url): http_client =AsyncHTTPClient() body Or for compatibility with older versions of Python, using the tornado.gen module: from tornado.httpclient importAsyncHTTPClient from tornado import gen @gen.coroutine def async_fetch_gen(url):

with the await or yield keywords. ## Examples Here is a sample synchronous function: from tornado.httpclient import HTTPClient def synchronous_fetch(url): http_client = HTTPClient() response = response.body And here is the same function rewritten asynchronously as a native coroutine: from tornado.httpclient importAsyncHTTPClient async def asynchronous_fetch(url): http_client =AsyncHTTPClient() body Or for compatibility with older versions of Python, using the tornado.gen module: from tornado.httpclient importAsyncHTTPClient from tornado import gen @gen.coroutine def async_fetch_gen(url):

result with the await or yield keywords. Examples Here is a sample synchronous function: from tornado.httpclient import HTTPClient def synchronous_fetch(url): http_client = HTTPClient() response = http_client response.body And here is the same function rewritten asynchronously as a native coroutine: from tornado.httpclient import AsyncHTTPClient async def asynchronous_fetch(url): http_client = AsyncHTTPClient() response tornado.gen module: 14 Chapter 6. Documentation Tornado Documentation, Release 6.5.1 from tornado.httpclient import AsyncHTTPClient from tornado import gen @gen.coroutine def async_fetch_gen(url): http_client

with the await or yield keywords. ## Examples Here is a sample synchronous function: from tornado.httpclient import HTTPClient def synchronous_fetch(url): http_client = HTTPClient() response response.body And here is the same function rewritten asynchronously as a native coroutine: from tornado.httpclient importAsyncHTTPClient async def asynchronous_fetch(url): http_client =AsyncHTTPClient() body Or for compatibility with older versions of Python, using the tornado.gen module: from tornado.httpclient importAsyncHTTPClient from tornado import gen @gen.coroutine def async_fetch_gen(url):

with the await or yield keywords. ## Examples Here is a sample synchronous function: from tornado.httpclient import HTTPClient def synchronous_fetch(url): http_client = HTTPClient() response response.body And here is the same function rewritten asynchronously as a native coroutine: from tornado.httpclient importAsyncHTTPClient async def asynchronous_fetch(url): http_client =AsyncHTTPClient() body Or for compatibility with older versions of Python, using the tornado.gen module: from tornado.httpclient importAsyncHTTPClient from tornado import gen @gen.coroutine def async_fetch_gen(url):