Helpful for reading user input until a valid response is received or processing dynamic data. Syntax for While Loop in Python: while test_expression: body of while Working of While Loop The following flowchart
可以使用break语句手动退出循环。 whileTrue:#写True可以直接让它条件直接成立user_input=input("请输入 'exit' 退出:")ifuser_input=="exit":breakprint(f"你输入的是:{user_input}") 1. 2. 3. 4. 5. 解释: 这段代码会一直让用户输入,直到输入"exit"时才退出循环。 3.for与while循环的区别 for循环...
Git stash stores the changes you made to the working directory locally (inside your project's .git directory;/.git/refs/stash, to be precise) and allows you to retrieve the changes when you need them. It's handy when you need to switch between contexts. It allows you to save changes t...
在SQL Server 2016 上运行 R Server 8.0.3 时,可能会收到错误消息:You are running version 9.0.0 of Microsoft R client on your computer, which is incompatible with the Microsoft R server version 8.0.3. Download and install a compatible version.以下修补程序可确保 SQL Server 20...
Because the condition now evaluates to False, you will exit the while loop and continue your program if it contains any more code. In this case, there isn't any more code so your program will stop. The above example is a bit basic, you can also include conditionals, or, in other ...
关于这个脚本有两个细节需要注意:首先,在 Python 2.x 中,命令raw_input用于从用户那里获取输入。在 Python 3.x 中,这个命令被简单地改成了input。第二,记住break的命令。这个命令实际上打破了您碰巧所在的循环。所以,在这种情况下,循环的while部分使它永远运行下去,但是如果检查var == 'q'返回true,脚本就会...
sys.exit(); tcp_socket.connect((TCP_IP, TCP_PORT))try:#Sending messagetcp_socket.send(MESSAGE_TO_SERVER)exceptsocket.error, e:print'Error occurred while sending data to server. Error code: '+str(e[0]) +' , Error message : '+ e[1] ...
elif ans=="no":con_exit=1returncon_exitelse:print("Answer with yes or no.")ask_for_confirm()defdelete_files(ending):forr,d,finos.walk(backup_dir):forfilesinf:iffiles.endswith("."+ending):os.remove(os.path.join(r,files))backup_dir=input("Enter directory to backup\n")# Enter dire...
user has solved the puzzle:ifSOLVED_TOWERin(towers["B"],towers["C"]):displayTowers(towers)# Display the towers one last time.print("You have solved the puzzle! Well done!")sys.exit()defgetPlayerMove(towers):"""Asks the player for a move. Returns (fromTower, toTower)."""whileTrue...
# hello_psg.py import PySimpleGUI as sg layout = [[sg.Text("Hello from PySimpleGUI")], [sg.Button("OK")]] # Create the window window = sg.Window("Demo", layout) # Create an event loop while True: event, values = window.read() # End program if user closes window or # press...