animal.py

from tornado.ioloop import IOLoop
import tornado.web
import tornado.httpserver
from motor.motor_tornado import MotorClient
from pprint import pprint


class AnimalHandler(tornado.web.RequestHandler):
    async def get(self):
        collect = db.animales
        res_list = []
        async for d in collect.find({}, {"_id": False}):
            pprint(d)
            res_list.append(d)
        self.write({"data": res_list})

app = tornado.web.Application([
    ("/", AnimalHandler),
])

if __name__ == "__main__":
    server = tornado.httpserver.HTTPServer(app)
    server.bind(8888)
    server.start(0)  # Forks multiple sub-processes
    db = MotorClient().test
    IOLoop.current().start()