retry model download locally if huggingface throws an http error. (#215)

* rety model download locally if huggingface throws an http error.

* appease the linter

* key error fix

* use non internal lib error

Co-authored-by: Guillaume Klein <guillaumekln@users.noreply.github.com>

---------

Co-authored-by: Guillaume Klein <guillaumekln@users.noreply.github.com>

faster_whisper/utils.py

@@ -77,11 +77,18 @@ def download_model(
         "tokenizer.json",
         "vocabulary.txt",
     ]
+    kwargs["allow_patterns"] = allow_patterns
+    kwargs["tqdm_class"] = disabled_tqdm
 
+    try:
+        return huggingface_hub.snapshot_download(
+            repo_id,
+            **kwargs,
+        )
+    except huggingface_hub.utils.HfHubHTTPError:
+        kwargs["local_files_only"] = True
         return huggingface_hub.snapshot_download(
             repo_id,
-        allow_patterns=allow_patterns,
-        tqdm_class=disabled_tqdm,
             **kwargs,
         )