use sys.executable rather than hardcode uv

Author: rerpha

system_tests/lewis_tests.py

@@ -1,6 +1,7 @@
 import contextlib
 import os
 import subprocess
+import sys
 import time
 from pathlib import Path
 
@@ -18,8 +19,7 @@
 @contextlib.contextmanager
 def julabo_simulation():
     command = [
-        "uv",
-        "run",
+        sys.executable,
         str(LEWIS_PATH),
         "julabo",
         "-p",
@@ -34,7 +34,9 @@ def julabo_simulation():
 
 
 def run_control_command(mode, command, value):
-    subprocess.check_output(["uv", "run", str(LEWIS_CONTROL_PATH), mode, command, value]).decode()
+    subprocess.check_output(
+        [sys.executable, str(LEWIS_CONTROL_PATH), mode, command, value]
+    ).decode()
 
 
 def santise_whitespace(input_str):
@@ -43,7 +45,7 @@ def santise_whitespace(input_str):
 
 def query_device_status():
     return santise_whitespace(
-        subprocess.check_output(["uv", "run", str(LEWIS_CONTROL_PATH), "device"]).decode()
+        subprocess.check_output([sys.executable, str(LEWIS_CONTROL_PATH), "device"]).decode()
     )
 
 
@@ -58,7 +60,7 @@ def test_list_available_devices(self):
         Then: returns a list of possible simulations
         """
         result = santise_whitespace(
-            subprocess.check_output(["uv", "run", str(LEWIS_PATH)]).decode()
+            subprocess.check_output([sys.executable, str(LEWIS_PATH)]).decode()
         )
 
         verify(result, self.reporter)