fix tests

alingse · alingse · commit 58df6bb41980 · 2020-03-09T23:18:37.000+08:00
diff --git a/tests/test_mkexcel.py b/tests/test_mkexcel.py
@@ -3,6 +3,7 @@
 # 2018.03.29
 
 import unittest
+from io import open
 
 from jsoncsv.dumptool import DumpCSV
 from jsoncsv.dumptool import DumpXLS
