title: How to move character string in ncurses screen?
body: <p>For example, I have a character string "Hello world" at the first line.
  How can I move it to the second line？</p>
  
  <p>ps: I know I can use code like this:</p>
  
  <pre><code>import curses
  
  stdscr = initscr()
  stdscr.adstr(x,y,"Hello World")
  y += 1
  stdscr.erase()
  stdscr.adstr(x,y,"Hello World")
  stdscr.getch()
  </code></pre>
  
  <p>but I have lots of context under this "Hello World", I'd like to find a way which will move or erase "Hello World" only. How can I do it?</p>