script/cpy/Signal.py

@@ -0,0 +1,14 @@
+import signal
+
+def is_main_thread():
+    try:
+        # Backup the current signal handler
+        back_up = signal.signal(signal.SIGINT, signal.SIG_DFL)
+    except ValueError:
+        # Only Main Thread can handle signals
+        return False
+    # Restore signal handler
+    signal.signal(signal.SIGINT, back_up)
+    return True
+print (is_main_thread())
+