test.py 文件源码

def bug1():
    # BUG:
    #       sys.stdin.readline() in `ask` dies with IOError and
    #       errno=EINTR when the terminal gets resized after curses has
    #       been de-initialized.
    #       1: SIGWINCH is sent by the terminal when the screen has been
    #           resized.
    #       2: curses forgot to restore the signal handling of SIGWINCH
    #           to the default of ignoring the signal.
    #           NOTE: signal.getsignal(signal.SIGWINCH) incorrectly
    #               returns signal.SIG_DFL. (Default is to be ignored.)
    #       3: Python fails to handle EINTR when reading from stdin.
    # REFERENCES:
    #       Issue 3949: https://bugs.python.org/issue3949
    #       PEP 0457: https://www.python.org/dev/peps/pep-0475/
    def handler(foo, bar):
        print("Resized")
    signal.signal(signal.SIGWINCH, handler)
    while True:
        sys.stdin.readline()