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) ...
I want to add the missing data to the database. How can I change the question? because my folder is going to be added to the same database, it s a bit unclear how to type . : ...
A json string variable is { "a": 1, "b": 2 } wants to escape as the json string { "a ": 1, "b ", 2}. is a variable, so there is no way to use R "() ". The json library uses jsoncpp is there any good way? ...
I want to use pug,stylus to develop Mini Program, and finally use webpack to package to generate a dist directory such as page index index.pug index.styl index.json index.js generate dist page index index.wxml i...
I unzipped the current nodejs to opt app node-v8.11.4-linux-x64 -sharp ln -s opt app node-v8.11.4-linux-x64 bin node usr local bin has no effect on executing node-v, (not even using ln-s opt app node-v8.11.4-linux-x64 bin node usr local bi...
for example, there is a whole row of JSON data and what I need is { productNo:xxx, key1:value1, key2:value2 } in this form ...