fix audio shard loop

afrispeech-200.py

@@ -182,11 +182,12 @@ class AfriSpeech(datasets.GeneratorBasedBuilder):
         splits = ("train", "dev")  # , "test"
         for split in splits:
             if accent == 'all':
-                audio_urls[split] = [
-                    _AUDIO_URL.format(accent=accent, split=split, shard_idx=i) 
-                    for accent in ACCENT_STATS for i in range(ACCENT_STATS[accent][split]['shards'])
-                    if (accent != 'all') and (split in ACCENT_STATS[accent]) and ('shards' in ACCENT_STATS[accent][split])
-                ]
+                audio_urls[split] = []
+                for accent in ACCENT_STATS:
+                    if accent == "all" or split not in ACCENT_STATS[accent]:
+                        continue
+                    for i in range(ACCENT_STATS[accent][split]['shards']):
+                        audio_urls[split].append(_AUDIO_URL.format(accent=accent, split=split, shard_idx=i))
             elif accent == 'all':
                 audio_urls[split] = [
                     _AUDIO_URL_ALL.format(split=split, shard_idx=i) for i in range(_SHARDS[split])