From b8bd3f62573b795622d60d533a63517fef47d737 Mon Sep 17 00:00:00 2001
From: Hui Lan <lanhui@zjnu.edu.cn>
Date: Fri, 1 Nov 2019 20:56:47 +0800
Subject: python-files: add copyright notice

---
 app/difficulty.py | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'app/difficulty.py')

diff --git a/app/difficulty.py b/app/difficulty.py
index 54b596f..58740f6 100644
--- a/app/difficulty.py
+++ b/app/difficulty.py
@@ -1,3 +1,8 @@
+###########################################################################
+# Copyright 2019 (C) Hui Lan <hui.lan@cantab.net>
+# Written permission must be obtained from the author for commercial uses.
+###########################################################################
+
 # Purpose: dictionary & pickle as a simple means of database.
 # Task: incorporate the functions into wordfreqCMD.py such that it will also show cumulative frequency.
 
-- 
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