make prerun script delete old mod directories before copy because the…

…y aren't overwriting

MPAS_true_failure_testing/pre_run_script.py

@@ -57,6 +57,13 @@ def main(argv):
             print(f"Creating directories for {test_name} test")
 
             init_copy_folder = f"{init_copy_dir}/{test_name}"
+
+            if os.path.exists(init_copy_folder):
+                try:
+                    shutil.rmtree(init_copy_folder)
+                except OSError as e:
+                    print("Error: %s - %s." % (e.filename, e.strerror))
+
             command = f"cp -aTf {init_dir}/ {init_copy_folder}"
             os.system(command)
 
@@ -96,6 +103,13 @@ def main(argv):
             for order in neg_test_orders:
                 # create initial conditions copy directories (helpful if initial directory restart files are absolute symlinks for size)
                 init_copy_folder = f"{init_copy_dir}/{var_name}_perturb_neg{order}"
+
+                if os.path.exists(init_copy_folder):
+                    try:
+                        shutil.rmtree(init_copy_folder)
+                    except OSError as e:
+                        print("Error: %s - %s." % (e.filename, e.strerror))
+
                 command = f"cp -af {init_dir}/ {init_copy_folder}"
                 os.system(command)
 
@@ -128,6 +142,13 @@ def main(argv):
             for order in pos_test_orders:
                 # create initial conditions copy directories (helpful if initial directory restart files are absolute symlinks for size)
                 init_copy_folder = f"{init_copy_dir}/{var_name}_perturb_{order}"
+
+                if os.path.exists(init_copy_folder):
+                    try:
+                        shutil.rmtree(init_copy_folder)
+                    except OSError as e:
+                        print("Error: %s - %s." % (e.filename, e.strerror))
+
                 command = f"cp -af {init_dir}/ {init_copy_folder}"
                 os.system(command)