python rookie, while watching the python subprocess tutorial of Liao Xuefeng, I encountered the following error report when executing nslookup command operating system: win10 python version: 3.7 import subprocess print( $ nslookup ) p = subproc...
problem description In multiprocessing, multiple processes are started to write multiple files, but after running, there is * .gz on the hard disk, but the content is empty. the environmental background of the problems and what methods you have trie...
Hello, everyone. Recently, we have been using multiprocessing to deal with problems. The approximate code is as follows: def work(i): -sharp print( child success ) pass def throw_error(e): raise e def main(): pool = m...
problem description is going to crawl the penalty information of several listed companies on the Shenzhen Stock Exchange website in a multi-process way at the same time, but the code is only executed on one of the listed company names, which is very c...
problem description I use the following code in multithreaded programming, which works fine when entering simple functions such as general print (), , but: raise ValueError ( "Pool not running ") ValueError: Pool not running appears when I run to cal...
I built a concurrent Async system using the Multi-processing module that comes with Python. There are only 2 tasks, one fast and one slow, concurrent execution, fast and slow. import sys, os, time, datetime from timeit import timeit import threading im...
I modified the opcache.ini file to configure as follows < hr > ; NOTE: The actual opcache.so extention is NOT SET HERE but rather ( usr local etc php conf.d docker-php-ext-opcache.ini) opcache.enable= "1 " opcache.memory_consumption= "256 " opca...
print Yang Hui triangle, each line is a list, output with generator. I use two lists, fac, to represent the current line, and pre to represent the previous line. Why is it that when you change the current line in the for loop, the previous line is change...
for newcomers, I have been self-learning front-end for some time, mainly watching videos and buying books by myself, and then practicing my hands to do some of the following small functions, please guide the learning path down! Job Link I read the ...
problem: the development environment of the project built with antd pro2.0 is normal. After it was packaged and launched today, it was found that the following error message appeared, which caused some pages to fail to load normally related code: all ...
Koa2 and http-proxy-middleware are used as proxies when server rendering is set in react, and no proxies are found to be successful Mapping local port 3333 to 8889, not found. router.get( , async function(ctx, next) { var template = await get...