added is_screen_locked.py

Author: HariSekhon

applescript/is_screen_locked.py

@@ -0,0 +1,41 @@
+#!/usr/bin/env python
+#  coding=utf-8
+#  vim:ts=4:sts=4:sw=4:et
+#
+#  Author: Hari Sekhon
+#  Date: 2022-12-05 22:03:56 +0000 (Mon, 05 Dec 2022)
+#
+#  https://github.com/HariSekhon/DevOps-Bash-tools
+#
+#  License: see accompanying Hari Sekhon LICENSE file
+#
+#  If you're using my code you're welcome to connect with me on LinkedIn
+#  and optionally send me feedback to help steer this or other code I publish
+#
+#  https://www.linkedin.com/in/HariSekhon
+#
+
+"""
+
+Detects whether the macOS screen is locked
+
+If locked, prints 'true' and returns exit code 0
+If unlocked, prints 'false' and returns exit code 1
+
+Useful to avoid automated keystrokes or mouse_clicks while on locked screen which can make it hard to login back in
+
+"""
+
+import sys
+import Quartz
+
+if __name__ == '__main__':
+    # false positive
+    # pylint: disable=no-member
+    d = Quartz.CGSessionCopyCurrentDictionary()
+    if 'CGSSessionScreenIsLocked' in d and d['CGSSessionScreenIsLocked'] == 1:
+        print 'true'
+        sys.exit(0)
+    else:
+        print 'false'
+        sys.exit(1)