copy2 causes a file permission error

Author: bdestombe

.gitignore

@@ -79,3 +79,5 @@ docs/_build
 *.bak
 tests/reference_model_runs_old
 local_tests/
+output.zip
+log.txt

tests/reference_model_runs/pick_model_runs_fun.py

@@ -4,7 +4,7 @@
 import tempfile
 from difflib import unified_diff
 from pprint import pprint
-from shutil import move, copy2
+from shutil import move, copy
 
 import flopy
 import numpy.testing as npt
@@ -64,7 +64,7 @@ def fun_test_reference_run(modelname,
         assert input_filelist, 'test_model_inputref_dir is empty:' + test_model_inputref_dir
 
         for fp in input_filelist:
-            copy2(fp, test_model_inputdirect_dir)
+            copy(fp, test_model_inputdirect_dir)
 
         fp_nam = os.path.join(test_model_inputref_dir, modelname + '.nam')
 

tox.ini

@@ -3,10 +3,12 @@
 [tox]
 envlist =
     py38
+    py39
 
 [testenv]
 basepython =
     {bootstrap,clean,check,docs,spell,report,codecov,py38}: {env:TOXPYTHON:python3.8}
+    {py39}: {env:TOXPYTHON:python3.9}
 setenv =
     PYTHONPATH={toxinidir}/tests
     PYTHONUNBUFFERED=yes