is a simple “Hello, world” example web app for Tornado: import tornado.ioloop import tornado.web class MainHandler(tornado.web.RequestHandler): def get(self): self.write("Hello, world") def make_app(): generator as the result of the yield expression. Most asynchronous code never touches the Future class directly except to immediately pass the Future returned by an asynchronous function to a yield expression Documentation Tornado Documentation, Release 5.1.1 (continued from previous page) def get_links(html): class URLSeeker(HTMLParser): def __init__(self): HTMLParser.__init__(self) self.urls = [] def handle_starttag(self

is a simple “Hello, world” example web app for Tornado: import tornado.ioloop import tornado.web class MainHandler(tornado.web.RequestHandler): def get(self): self.write("Hello, world") def generator as the result of the yield expression. Most asynchronous code never touches the Future class directly except to immediately pass the Future returned by an asynchronous function to a yield expression remove_fragment(url): pure_url, frag = urldefrag(url) return pure_url def get_links(html): class URLSeeker(HTMLParser): def __init__(self): HTMLParser.__init__(self)

is a simple “Hello, world” example web app for Tornado: import tornado.ioloop import tornado.web class MainHandler(tornado.web.RequestHandler): def get(self): self.write("Hello, world") def make_app(): generator as the result of the yield expression. Most asynchronous code never touches the Future class directly except to immediately pass the Future returned by an asynchronous function to a yield expression pure_url def get_links(html): 16 Chapter 4. Documentation Tornado Documentation, Release 4.5.3 class URLSeeker(HTMLParser): def __init__(self): HTMLParser.__init__(self) self.urls = [] def handle_starttag(self

is a simple “Hello, world” example web app for Tornado: import tornado.ioloop import tornado.web class MainHandler(tornado.web.RequestHandler): def get(self): self.write("Hello, world") def generator as the result of the yield expression. Most asynchronous code never touches the Future class directly except to immediately pass the Future returned by an asynchronous function to a yield expression remove_fragment(url): pure_url, frag = urldefrag(url) return pure_url def get_links(html): class URLSeeker(HTMLParser): def __init__(self): HTMLParser.__init__(self)

is a simple “Hello, world” example web app for Tornado: import tornado.ioloop import tornado.web class MainHandler(tornado.web.RequestHandler): def get(self): self.write("Hello, world") def make_app(): generator as the result of the yield expression. Most asynchronous code never touches the Future class directly except to immediately pass the Future returned by an asynchronous function to a yield expression Documentation Tornado Documentation, Release 6.1 (continued from previous page) def get_links(html): class URLSeeker(HTMLParser): def __init__(self): HTMLParser.__init__(self) self.urls = [] def handle_starttag(self

is a simple “Hello, world” example web app for Tornado: import tornado.ioloop import tornado.web class MainHandler(tornado.web.RequestHandler): def get(self): self.write("Hello, world") def make_app(): generator as the result of the yield expression. Most asynchronous code never touches the Future class directly except to immediately pass the Future returned by an asynchronous function to a yield expression def remove_fragment(url): pure_url, frag = urldefrag(url) return pure_url def get_links(html): class URLSeeker(HTMLParser): def __init__(self): HTMLParser.__init__(self) self.urls = [] def handle_starttag(self

WORLD Here is a simple “Hello, world” example web app for Tornado: import asyncio import tornado class MainHandler(tornado.web.RequestHandler): def get(self): self.write("Hello, world") def make_app(): generator as the result of the yield expression. Most asyn- chronous code never touches the Future class directly except to immediately pass the Future returned by an asyn- chronous function to a yield expression def remove_fragment(url): pure_url, frag = urldefrag(url) return pure_url def get_links(html): class URLSeeker(HTMLParser): def __init__(self): HTMLParser.__init__(self) self.urls = [] def handle_starttag(self

WORLD Here is a simple “Hello, world” example web app for Tornado: import asyncio import tornado class MainHandler(tornado.web.RequestHandler): def get(self): self.write("Hello, world") def make_app(): generator as the result of the yield expression. Most asyn- chronous code never touches the Future class directly except to immediately pass the Future returned by an asyn- chronous function to a yield expression def remove_fragment(url): pure_url, frag = urldefrag(url) return pure_url def get_links(html): class URLSeeker(HTMLParser): def __init__(self): HTMLParser.__init__(self) self.urls = [] def handle_starttag(self

WORLD Here is a simple “Hello, world” example web app for Tornado: import asyncio import tornado class MainHandler(tornado.web.RequestHandler): def get(self): self.write("Hello, world") def make_app(): generator as the result of the yield expression. Most asyn- chronous code never touches the Future class directly except to immediately pass the Future returned by an asyn- chronous function to a yield expression def remove_fragment(url): pure_url, frag = urldefrag(url) return pure_url def get_links(html): class URLSeeker(HTMLParser): def __init__(self): HTMLParser.__init__(self) self.urls = [] def handle_starttag(self

WORLD Here is a simple “Hello, world” example web app for Tornado: import asyncio import tornado class MainHandler(tornado.web.RequestHandler): def get(self): self.write("Hello, world") def make_app(): generator as the result of the yield expression. Most asyn- chronous code never touches the Future class directly except to immediately pass the Future returned by an asyn- chronous function to a yield expression def remove_fragment(url): pure_url, frag = urldefrag(url) return pure_url def get_links(html): class URLSeeker(HTMLParser): def __init__(self): HTMLParser.__init__(self) self.urls = [] def handle_starttag(self