in the past, I used to put future directly into eventloop to perform run_until_complete, interview. When an interviewer asked me how to schedule the program, I was completely confused. May I ask how you are dispatched? ...
has the following code. In my expectation, using two browser windows (A _ Magi B window) to access http: 127.0.0.1:8000 at the same time, the total time to wait for the two pages to load should be close to 10 seconds, but it actually takes 20 seconds,...
A json file with millions of lines needs to be cleaned and the cleaned structured data needs to be re-stored as a csv file. Try to use pandas s dataframe to dump cleaned data items, but find that the speed of conventional cleaning is too slow to write ...
The code is as follows. The index function handles the incoming request, init initializes the server, and the rest is the code to create the server @asyncio.coroutine def index(request): print( one connection come... ) yield from asyncio.slee...
this is how aiohttp officially requests a single url. What should I do if I request multiple url and get the content? import aiohttp import asyncio async def fetch(session, url): async with session.get(url) as response: return await respon...
the following code simulates the use of two threads to manage event loop: import time import asyncio import threading async def task(c, i): for _ in range(i): print(c) await asyncio.sleep(1) return i def thread(loop): -sharp ...
problem description: when I was working on the actual combat article of Liao Xuefeng, I had a question when operating the database. I first defined two co-programs, and then defined a main co-program await to execute the two co-programs sequentially...
import asyncio import sqlalchemy as sa from aiomysql.sa import create_engine @asyncio.coroutine def go(): engine = yield from create_engine(user= root ,db= test ,host= 127.0.0.1 ,password= root ) metadata = sa.MetaData(bind=engine) ...
first of all, I found a lot of database design on Baidu, it can be said that there are different opinions! I see an intermediate table is designed like this, commodity ID sku attributes, unit price inventory, see that the intermediate attributes store js...
it is not clear to spell the name of the callback function on url. After ajax is successful, why does this callback function execute automatically? Ask for advice ...
java programmers use the project Ant Financial Services Group ant design pro ((hereinafter referred to as pro). Everyone who has used it knows that the menu of the original pro project is defined by a file. I would like to ask how to load the menu json f...
how does alpine:3.7 install the php extension in docker? Environment needs php5.6+nginx found that there is no mbstring extension below php7, and there is no such extension in alpine repository. How can I install it in docker? Look forward to God s ad...
problem description the environmental background of the problems and what methods you have tried related codes Please paste the code text below (do not replace the code with pictures) window.onload = function () { var hdList = $( .hd-list ...