Functionize check features

check-features.py

@@ -7,18 +7,20 @@ with open('template.md', "rt") as f:
     metadata, content = frontmatter.parse(f.read())
     acceptable_features = set(metadata['features'])
 
-failed = False
-for filename in Path('_board').glob("*.md"):
+def verify_features(folder, valid_features):
+    success = True
+    for filename in Path(folder).glob("*.md"):
         with open(filename, "rt") as f:
             metadata, content = frontmatter.parse(f.read())
         features = metadata.get('features') or ()
-    for feature in sorted(set(features) - acceptable_features):
+        for feature in sorted(set(features) - valid_features):
             print(f"{filename}:0: Non-standard feature: {feature}")
-        failed = True
+            success = False
+    return success
 
-if failed:
+if not verify_features("_board", acceptable_features):
     print("Non-standard features found. See https://learn.adafruit.com/how-to-add-a-new-board-to-the-circuitpython-org-website/adding-to-downloads for acceptable features")
-    raise SystemExit(failed)
+    raise SystemExit(True)
 
 # Check Blinka Download Features
 blinka_features = {
@@ -34,15 +36,7 @@ blinka_features = {
     "Infrared Receiver",
 }
 
-failed = False
-for filename in Path('_blinka').glob("*.md"):
-    with open(filename, "rt") as f:
-        metadata, content = frontmatter.parse(f.read())
-    features = metadata.get('features') or ()
-    for feature in sorted(set(features) - blinka_features):
-        print(f"{filename}:0: Non-standard feature: {feature}")
-        failed = True
-
+failed = not verify_features("_blinka", blinka_features)
 if failed:
     print("Non-standard features found. See https://learn.adafruit.com/how-to-add-a-new-board-to-the-circuitpython-org-website/adding-to-blinka for acceptable features")