in its simplest form, this shows the bug -- signal.getsignal does not 
return the original signal handler (the "tell the app to resize itself" 
one that curses installs), and so, the original signal handler cannot 
be re-activated after being temporarily disabled

~~~~~~~~~~~~~~

import curses
import signal

curses.initscr()
old_winch = signal.getsignal(signal.SIGWINCH)
curses.endwin()
print old_winch