For loop Python-运行时使用最新文件更新循环

是否有一种最佳方法可以持续检查当前目录中的更新文件，并在运行时将该更新文件添加到循环中

我尝试过的代码：

list = os.listdir(folder)
    #[A1.txt,B1.txt,C1.txt,D1.txt]  #add E1.txt
       for i in list:
          time.sleep(10)
          with open(folder + i, "rb") as readdata:
             print("The executing file is:", i)
             data = readdata.read()
                    
Current Output:
('The executing file is:', 'A1.txt')
('The executing file is:', 'B1.txt')
('The executing file is:', 'C1.txt')
('The executing file is:', 'D1.txt')
            
Expected Output:
('The executing file is:', 'A1.txt')
('The executing file is:', 'B1.txt')
('The executing file is:', 'C1.txt')
('The executing file is:', 'D1.txt')
('The executing file is:', 'E1.txt')

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