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subprocess ''' subprocess: sub: son Process: process You can send commands to the operating system terminal through python code and return the results ''' import subprocess while True: #1. Let users input terminal commands cmd_str = input('Please input terminal command: '). strip() #Popen(cmd command, shell=True, ...

Catalog 1. Preliminary test of commissioning mode 2. Details of other configuration parameters in app.config 3. Modify the config configuration method (from object usage) 3.1 modify app.config directly: 3.2 import by class: 4. Details of instantiation configuration parameters in flas ...

Official documents: https://docs.python.org/2/library/logging.html I. log level The logging module provides a standard log interface, which can record our daily operations and store logs of various formats. The log level of logging is from low to high as debug(), info(), warning(), error() and critical() CRITICAL(50) > ERROR(40) > WAR ...

Using parted and gdisk tools to GPT partition the hard disk has the same final effect. If it is a solid-state drive, the partition of the hard disk will be 4K aligned by default using parted. Basic configuration example: Before configuration, use fdisk -l to make sure your linux system has an empty hard disk [root@localhost ~]# ...

1. Serialization What is serialization - The process of converting an original dictionary, list, etc. into a string is called serialization. 1.1 Why serialization Why convert other data types to strings?Because only bytes can be transmitted over the network,Only bytes and STRs can be stored in the file. For example, one of the data we calculate ...

1 Write a program to read the input, stop reading the #character, and report the number of spaces, line breaks, and all other characters read. #include<stdio.h> int main(void) { char ch; int e=0,n=0; while( (ch=getchar())!='#' ){ if( ch=='e' ) e=1; else{ if( ch=='i' & ...

Almost no method is absolutely correct to detect the file coding by certain means without informing the file coding. Only the success rate. 1. The following are several commonly used methods for identifying file codes. Common encoding file starts to identify file encoding: ANSI: no format definition Unicode: the first two bytes are FFFE Unico ...

[TOC] Preface: LVM is the abbreviation of logical volume management. It is a mechanism of partition management in Linux environment. It realizes the file system to span different disks and partitions. Its working principle is to connect several disk partitions into a whole volume group, create the logical volume group on the volume group at wi ...

I. string 1. Split string String.split() String has a way to split the string. split(). But if there is a written string, it needs to be escaped to split, otherwise it will make an error. String to be escaped:. $| () [{^? * + \ \ there are 12 special characters in total. If you want to split a string with these char ...

Interaction with users python3 medium input saves whatever the user enters as a string type   python2 medium Raw? Input will save anything the user enters as a string type name=raw_input('>>>>>>>>>>>>>>>>>>>>>>>>>>>>: ') >>>:egon >>& ...