testwheel.py: Cache the result of pip list

Pick-to: master
Task-number: PYSIDE-2247
Change-Id: I6460973524f36c4dbfae99fd75a177e43a99a310
Reviewed-by: Adrian Herrmann <adrian.herrmann@qt.io>
Reviewed-by: Shyamnath Premnadh <Shyamnath.Premnadh@qt.io>

1 files changed, 18 insertions, 10 deletions

diff --git a/scripts/packagetesting/testwheel.py b/scripts/packagetesting/testwheel.py
index 9aad708..ba9ca1d 100644
--- a/scripts/packagetesting/testwheel.py
+++ b/scripts/packagetesting/testwheel.py
@@ -4,6 +4,7 @@
 
 
 from argparse import ArgumentParser, RawTextHelpFormatter
+from functools import cache
 from pathlib import Path
 import os
 import shutil
@@ -61,6 +62,23 @@ def list_modules():
     print(f"\nInstalled_modules ({len(installed_modules)}): {module_string}\n")
 
 
+@cache
+def get_installed_modules():
+    """Return installed modules"""
+    result = []
+    _, lines = run_process([sys.executable, "-m", "pip", "list"])
+    for l in lines:
+        tokens = l.split(' ')
+        if len(tokens) >= 1:
+            result.append(tokens[0].lower())
+    return result
+
+
+def has_module(name):
+    """Checks for a module"""
+    return name.lower() in get_installed_modules()
+
+
 def pyside2_examples():
     """List of examples to be tested (PYSIDE 2)"""
     return ['widgets/mainwindows/mdi/mdi.py',
@@ -138,16 +156,6 @@ def run_example(root, path):
     print(f'{path} returned {exit_code}\n\n')
 
 
-def has_module(name):
-    """Checks for a module"""
-    code, lines = run_process([sys.executable, "-m", "pip", "list"])
-    for l in lines:
-        tokens = l.split(' ')
-        if len(tokens) >= 1 and tokens[0].lower() == name.lower():
-            return True
-    return False
-
-
 def test_deploy(example):
     """Test pyside6-deploy."""
     base_name = example.name