add test

app.py

@@ -0,0 +1,27 @@
+from huggingface_hub import HfApi, ModelFilter
+from collections import defaultdict
+import pandas as pd
+
+api = HfApi()
+
+filter = ModelFilter(library="diffusers")
+
+models = api.list_models(filter=filter)
+
+downloads = defaultdict(int)
+
+for model in models:
+    is_counted = False
+    for tag in model.tags:
+        if tag.startswith("diffusers:"):
+            is_counted = True
+            downloads[tag[len("diffusers:"):]] += model.downloads
+
+    if not is_counted:
+        downloads["other"] += model.downloads
+
+# Sort the dictionary by keys
+sorted_dict = dict(sorted(downloads.items(), key=lambda item: item[1], reverse=True))
+
+# Convert the sorted dictionary to a DataFrame
+df = pd.DataFrame(list(sorted_dict.items()), columns=['Pipeline class', 'Downloads'])