如何显示上传进度,或是显示上传中?

from mega import Mega

mega = Mega()
m = mega.login('603ior5vkcpsg9y@', '1d0v7ea6lk')  
space = m.get_storage_space(kilo=True)
print(space)
file = m.upload('aa.rar')
m.get_upload_link(file)       #上传

print(m.get_upload_link(file))