PYTHON - UNRAR : how can I build a thread to monitoring the downloading status

[Palerm0_24]

Hello to all of you,

I am posting this discussion because I have a problem. Indeed, I'm new to python and I'd like to get help on Threading.
I am currently developing an automation script to connect to an FTP, navigate to folders and download files.
This part is indeed finished but I would like to be able to make a thread to check for example (every 20min) if the download is going smoothly.

here is my download code:

class Download:

  def __init__(self):
    self.path="FolderFiles"
    self.target=" /var/www/folder/Output"

  def downloadFile(self):
    for root, dirs, files in os.walk(self.path, topdown=False):
      for name in files:
        print(name)
        rarFiles=os.path.join(root, name)
        unrar = "unrar x -y "+rarFiles+self.target
      os.system(unrar)
          #time.sleep(10)

PS: If you have other proposals other than Thread I am also listening
Thank you for your help