import tornado.ioloop
import tornado.web
from random import randint 
def f(l,n):
    return ' '.join([str(randint(-n,n)) for _ in range(l)])
class MainHandler(tornado.web.RequestHandler):
    def get(self):
        self.write(f(100,100))
if __name__ == "__main__":
    app = tornado.web.Application([
        (r"/", MainHandler),
    ])
    app.listen(8000)
    tornado.ioloop.IOLoop.current().start()

 >>> import requests
>>> r = requests.get('http://localhost:8000')
>>> r
<Response [200]>
>>> r.text
'11 -95 55 10 1 28 -24 59 -72 28 -49 8 83 -78 64 -68 -40 -48 -23 43 -67 12 76 -21 20 56 -77 -89 -98 -86 53 63 62 -94 -28 48 0 -51 -26 -85 75 9 -15 44 95 -20 -82 27 33 -36 8 31 100 85 38 93 -89 -7 25 92 72 24 -12 -78 52 40 -15 -89 -85 -92 78 12 -55 86 -97 -13 -10 8 -43 43 -28 47 39 57 23 -90 -83 -24 -99 -70 74 -90 -80 11 -85 -66 93 -28 -95 39'
>>> 

 from tornado.web import Application
from tornado.websocket import WebSocketHandler
from tornado.ioloop import IOLoop
from tornado.options import options, define
define(name='port', default="PORT", help='Port')
class MyServer(WebSocketHandler):
    def open(self, *args: str, **kwargs: str):
        self.write_message('Вы подключились к серверу')
def main():
    print('Server run')
    options.parse_command_line()
    app = Application([('/', MyServer)])
    app.listen(options.port)
    IOLoop.instance().start()
if __name__ == '__main__':
    main()

 from tornado.ioloop import IOLoop
from tornado.websocket import websocket_connect
from tornado.gen import coroutine
class Client():
    def __init__(self, url):
        self.url = url
        self.ws = None
        self.ioloop = IOLoop().instance()
        self.connect()
        self.ioloop.start()
    @coroutine
    def connect(self):
        print('Попытка подключения')
        try:
            self.ws = yield websocket_connect(self.url)
        except Exception as s:
            print('Ошибка', s)
        else:
            print('Подключенно')
            self.run()
    @coroutine
    def run(self):
        while True:
            message = yield self.ws.read_message()
            if message is None:
                self.ws = None
                print('Соединение прерванно')
                break
            print(message)
if __name__ == '__main__':
    Client('ws://domain.name')