Merge pull request #110 from watts-dev/Dakota_fix

Update plugin_dakota.py

CHANGELOG.md

@@ -15,6 +15,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ### Fixed
 
+* Fixed path to system python executable in dakota plugin
 * Fixed path for templates rendered from the `extra_template_inputs` argument in
   `PluginGeneric` and subclasses
   ([#109](https://github.com/watts-dev/watts/pull/109))

src/watts/plugin_dakota.py

@@ -3,6 +3,7 @@
 
 import csv
 import json
+import sys
 import os
 from pathlib import Path
 import pickle
@@ -215,7 +216,7 @@ def _run_coupled_code(coupled_code_exec: str) -> dict:
     if not os.path.exists(coupled_code_exec):
         raise FileNotFoundError("Coupled-code script missing.")
 
-    subprocess.check_output(["python", coupled_code_exec])
+    subprocess.check_output([sys.executable, coupled_code_exec])
 
     # Read the 'opt_res.out' pickle file and
     # store the results to 'res_output' for data