(Merge 3.3) Issue #17209: curses.window.get_wch() now handles correctly KeyboardInterrupt (CTRL+c)

Misc/NEWS

@@ -292,6 +292,9 @@ Core and Builtins
 Library
 -------
 
+- Issue #17209: curses.window.get_wch() now handles correctly KeyboardInterrupt
+  (CTRL+c).
+
 - Issue #5713: smtplib now handles 421 (closing connection) error codes when
   sending mail by closing the socket and reporting the 421 error code via the
   exception appropriate to the command that received the error response.

Modules/_cursesmodule.c

@@ -1181,6 +1181,9 @@ PyCursesWindow_Get_WCh(PyCursesWindowObject *self, PyObject *args)
         return NULL;
     }
     if (ct == ERR) {
+        if (PyErr_CheckSignals())
+            return NULL;
+
         /* get_wch() returns ERR in nodelay mode */
         PyErr_SetString(PyCursesError, "no input");
         return NULL;