Index: columnize-0.3.10/__pkginfo__.py
===================================================================
--- columnize-0.3.10.orig/__pkginfo__.py	2020-04-17 03:02:33.000000000 +0200
+++ columnize-0.3.10/__pkginfo__.py	2022-03-08 07:53:57.177335010 +0100
@@ -45,7 +45,7 @@ exec(
     )
 )
 
-tests_require = ["mock"]
+tests_require = [""]
 web = "https://github.com/rocky/pycolumnize"
 # tracebacks in zip files are funky and not debuggable
 zip_safe = False
Index: columnize-0.3.10/test_columnize.py
===================================================================
--- columnize-0.3.10.orig/test_columnize.py	2022-03-08 07:53:49.941293417 +0100
+++ columnize-0.3.10/test_columnize.py	2022-03-08 07:56:36.710251987 +0100
@@ -1,7 +1,8 @@
 #!/usr/bin/env python
 # -*- Python -*-
 "Unit test for Columnize"
-import mock, operator, os, sys, unittest
+import operator, os, sys, unittest
+from unittest.mock import mock
 
 top_builddir = os.path.join(os.path.dirname(__file__), os.path.pardir)
 if top_builddir[-1] != os.path.sep: