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...
the paging component is effective in the local environment here is part of my code: data() { return { tops: {}, news: {}, hots: {}, recommends: {}, PageSize:null, totalPage:null, curren...
what is the reason for the unsuccessful installation of vue-cli? ...
now I want to spoil session=request.session () when changing pages for i in range (0Pie20): session=request.session how to write this format in scrapy? ...
I hope that when the map is loaded, the tooltip, will be highlighted and displayed by default, but the highlighting effect can be realized, but the dispatchAction display tooltip, can not be displayed in tooltip. echarts, but can not be displayed in the...
for example, there is such an array of objects let data = [ { title: , tagName: h1 }, { title: , tagName: h1 }, { title: , tagName: h2 }, { title: , tagName: h3 }, { title: , t...