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...
mysql version 5.7 question 1: add an index to a field of numeric type: if the date is stored as int, can you add an index to the date in such a way as index or key? index (field name)? question 2: whether to use index or key to index the plastic ...
Environment, version: node: 8.9.3 webpack: 3.6.0 vue: 2.2.2 vue-cli: 2.x webpack is a template that uses vue-cli. After packaging, an error is displayed on the WeChat end of ios, while Android is fine: prompt that there is an error ...
weex-picker only supports picker on the web side of weex. How to introduce https: github.com weexteam w....
specific questions found that some people can not open my website https: miaoqiang.name, or open super slowly, or display the text on the page, the css style does not load that. the server is the server of Aliyun Hong Kong, and the certificate i...
bootstrap-colorpicker Hidden how to cancel the changeColor event after hiding ...