如何基于文本的最后一行设置While循环

Question

我正在执行数据处理，并且必须一次处理大量数据。没有文件，只有我粘贴到记事本中并使用pyautogui操作的文本

我只需要检查正在处理的当前行的文本，如果为空白，则while循环结束，如果不为空白，则循环重复。应该很容易做到，但是我不知道如何检查行中的文本。我在下面提供了我的代码：

import os
import subprocess
import time
import pyautogui
import ctypes

ctypes.windll.user32.SetCursorPos(1373,-550)
pyautogui.click()
time.sleep(1)
pyautogui.typewrite(["delete"])
pyautogui.typewrite(["delete"])
pyautogui.typewrite(["delete"])
pyautogui.typewrite(["delete"])
pyautogui.typewrite(["delete"])
pyautogui.typewrite(["delete"])
pyautogui.typewrite(["delete"])
pyautogui.typewrite(["delete"])
pyautogui.typewrite(["delete"])
pyautogui.typewrite(["delete"])
pyautogui.typewrite(["delete"])
pyautogui.typewrite(["delete"])
pyautogui.typewrite(["delete"])
pyautogui.typewrite(["delete"])
pyautogui.typewrite(["delete"])
pyautogui.typewrite(["delete"])
pyautogui.typewrite(["delete"])
pyautogui.typewrite(["delete"])
pyautogui.typewrite(["delete"])
pyautogui.typewrite(["delete"])
pyautogui.typewrite(["delete"])
pyautogui.typewrite(["delete"])
pyautogui.typewrite(["down"])
pyautogui.hotkey('shift','end')
pyautogui.typewrite(["delete"])
pyautogui.typewrite(["delete"])
pyautogui.hotkey('shift','end')
pyautogui.typewrite(["delete"])
pyautogui.typewrite(["delete"])