while-loop

问题 I am trying to create a simple while loop that will run the commands start, stop, quit, and help. Start, stop, and help will just display some printed text. After they are run, I want it to keep going on to another command. However, on quit I want the whole program to stop. input_command = input("> ").lower() while input_command != "quit": print(input_command) if input_command == "start": print("The car is ready! VROOM VROOM!") print(input_command) elif input_command == "stop": print("Car

问题 I have a bash script for backing up a set of folders/files. The script loops through a pre-configured file to determine how to copy the folder/file. The problem I am facing is the script exits the while loop after processing the first "file" entry (2nd column value). Here is the script. #!/bin/bash sudo crontab -l > /home/ipaccess/crontab.txt DATE=`date +%m-%d-%Y` TARGETDIR="/exports/backup/Web-Server/$DATE/" BACKUPLIST="/home/ipaccess/backup/backuplist" ssh 172.29.32.246 mkdir -p $TARGETDIR

问题 I want to be able to extract two different sequences from one line. For example: atg ttg tca aat tca tgg atc atg ttg tca aat tca tgg atc tag I want to create a loop where the program will read from the 1st atg to tag , output that sequence into a file, as well as take the second atg read to tag , output that sequence into the same file. Output I want: atg ttg tca aat tca tgg atc atg ttg tca aat tca tgg atc tag atg ttg tca aat tca tgg atc tag How can I go about this? Thank you for the help.

问题 I'm very new to Python. I made a math program that keeps generating a new math problem every time you get the last one right. however I don't know how to exit/break the while True loop and switch from addition to subtraction. import random while True: question = input("press 1 for addition, press 2 for subtraction.") if question == "1": print("Try your skill at these problems.") number1 = random.randint(0, 9) number2 = random.randint(0, 9) while True: print(number1, "+", number2, "=") number3

问题 I'm new to programming and I was trying to make a calculator and I'm adding a while loop, so that if you want to repeat you just type "1" and the program repeats. The problem is if I repeat it the scanf() breaks and no longer allows me to type something into the command line. (I am using Visual C++ Windows Console Application) I was trying to use fflush(stdin) to clear the keyboard buffer, this did not work either. #include "pch.h" #define _CRT_SECURE_NO_WARNINGS #include <stdio.h> #include

问题 I can't seem to figure out why this script is doing this, so I need someone with more experience/better eyes to tell me what the issue is. I can't seem to find anything elsewhere online, but I may be wording my search terms wrong. This set of While/Foreach loops works just fine except that it spits out the same row four times: $squery = "SELECT username, name FROM name_records"; $sresult = mysql_query($squery); while($srow = mysql_fetch_array($sresult)) { foreach ($srow as $scell) { $username

问题 So I'm kind of new to VB and am just playing around with a little project, I currently need a loop that is constantly checking the systems clock to see if it's equal to a certain time. While Not myTime.Hour = 24 If TimeOfDay = newTime Then nfi.ShowBalloonTip(15) intRandNumb = RandomNumber(1, 15) dblAddMinutes = intTime + intRandNumb newTime = TimeOfDay.AddMinutes(dblAddMinutes) End If End While I have this right now, but obviously it's grinding everything to a halt and using 50% of my cpu in

问题 Right now in my nodejs socket.io 'game' I would like to cycle through all users currently online*, each having their opportunity to be a leader and click a button that would sequentially make the next user the leader (to, again, click a button that makes the next user the leader. You get the idea). My issue is that when I make the while loop wait for the 'leader' socket to trigger the leaderSelection event to increment the while loop, the while loop instead creates an infinite loop, crashing

问题 I connect to a server by /dev/tcp to receive incoming xml messages. The script below is running well, but if there is an blank character in the xml message, the message is abrupt. But I need the to read full message. Can I solve this by integrate the closing xml-tag in the while-loop? #!/bin/bash exec 3<>/dev/tcp/192.168.24.23/1234 processResponse() { RESPONSE=$1 if [[${RESPONSE:0:10} == "<firsttag>" ]]; then curl -X POST --data "postdata=$RESPONSE" http://localhost/index.php fi } while read

问题 When I run my script, it is ended before completing the task that is in while loop. driver = webdriver.Chrome() driver.get('http://example.com') #input("Press any key to continue1") s_b_c_status = "False" while s_b_c_status == "True": try: if(driver.find_element_by_xpath("//div[@role='button' and @title='Status']")): s_b_c_status = "True" except NoSuchElementException: s_b_c_status = "False" if(s_b_c_status == "True"): print("Scanning Done!") else: print("Error") As my site is not having the