framework.py 文件源码

def MakeValidSysOuts():
    if not isinstance(sys.stdout, SafeOutput):
        sys.stdout = sys.stderr = SafeOutput()
        # and for the sake of working around something I can't understand...
        # prevent keyboard interrupts from killing IIS
        import signal
        def noOp(a,b):
            # it would be nice to get to the bottom of this, so a warning to
            # the debug console can't hurt.
            print("WARNING: Ignoring keyboard interrupt from ActiveScripting engine")
        # If someone else has already redirected, then assume they know what they are doing!
        if signal.getsignal(signal.SIGINT) == signal.default_int_handler:
            try:
                signal.signal(signal.SIGINT, noOp)
            except ValueError:
                # Not the main thread - can't do much.
                pass