Use pathlib

Author: foolip

.github/workflows/labels.py

@@ -1,17 +1,17 @@
-import json
-import os
-import shutil
+from pathlib import Path
 
 import requests
 
-# Delete and recreate the labels/ directory
-shutil.rmtree('labels')
-os.mkdir('labels')
+dir = Path('labels')
+
+# Remove labels/*.txt.
+for child in dir.iterdir():
+    if child.suffix == '.txt':
+        child.unlink()
 
 # Fetch the list of all labels from wpt.fyi.
 data = requests.get('https://wpt.fyi/api/metadata?includeTestLevel=true&product=chrome').json()
 
-
 # Invert the data structure to a mapping from label to tests.
 labels = {}
 for test, links in data.items():
@@ -25,8 +25,7 @@
 # Write one file for every label.
 for label, tests in labels.items():
     tests.sort()
-    filename = os.path.join('labels', f'{label}.txt')
-    with open(filename, 'w') as f:
+    with dir.joinpath(f'{label}.txt').open(mode='w') as f:
         for test in tests:
             f.write(test)
             f.write('\n')

labels/README.md

@@ -0,0 +1 @@
+This directory tracks all tests that have a label starting with "interop-". It's updated automatically and is used to ensure that labels aren't added or removed without the interop team being aware of the change.