sys.stdin can be None

in which case we can't check if it's a tty or read from it
9 years ago · 5a4b968e3b
parent 7dac0a2bac
commit 5a4b968e3b
1 changed files with 1 additions and 1 deletions
--- a/notebook/notebookapp.py
+++ b/notebook/notebookapp.py
@ -1206,7 +1206,7 @@ class NotebookApp(JupyterApp):
            log("Terminals not available (error was %s)", e)

    def init_signal(self):
-        if not sys.platform.startswith('win') and sys.stdin.isatty():
+        if not sys.platform.startswith('win') and sys.stdin and sys.stdin.isatty():
            signal.signal(signal.SIGINT, self._handle_sigint)
        signal.signal(signal.SIGTERM, self._signal_stop)
        if hasattr(signal, 'SIGUSR1'):