Merge pull request #4884 from wlemkows/py-cache-disable

test: disable bytecode on module import (py)

Author: lplewa

src/test/Makefile

@@ -370,7 +370,6 @@ clean clobber: $(TESTS_BUILD)
 	$(RM) *.$(SYNC_EXT)
 	$(RM) $(FILE_MAX_DAX_DEVICES)
 	$(RM) envconfig.sh envconfig.py
-	$(RM) -r __pycache__ */__pycache__
 
 $(TESTS) $(OBJ_DEPS) $(LIBPMEMPOOL_DEPS) $(LIBPMEMPOOL_MOD_DEPS): $(TEST_DEPS)
 

src/test/testframework.py

@@ -6,6 +6,11 @@
 
 import sys
 from os import path
+
+# Don't create cache files on the import of test modules.
+# Improvement using bytecode in python tf code is insignificant.
+# It is workaround for a pycache clobber issue in our tangled Makefiles.
+sys.dont_write_bytecode = True
 sys.path.insert(1, path.abspath(path.join(path.dirname(__file__), 'unittest')))
 
 # flake8 issues silenced: