ci install beautifulsoup4

Former-commit-id: 94acb160

.github/workflows/release.yml

@@ -40,7 +40,7 @@ jobs:
         dir=${git_branch}/${timestamp}-${git_hash}
         $HOME/ossutil64 cp --update -r $ONEFLOW_CI_TMP_DIR/wheelhouse oss://oneflow-static/staging/${dir}
         python3 -m pip config set global.index-url https://pypi.tuna.tsinghua.edu.cn/simple
-        python3 -m pip install oss2 --user
+        python3 -m pip install oss2 beautifulsoup4 --user
         python3 tools/create_pip_index.py --dir_key staging/${dir} -b oneflow-static --index_key=staging/${git_branch}/pip.index.html
   pack_src:
     name: Pack source code

tools/create_pip_index.py

@@ -46,12 +46,14 @@ def generate_index_file(endpoint, bucket, dir_key, file_path, index_key=None):
     bucket_obj = oss2.Bucket(auth, endpoint, bucket)
 
     files = bucket_obj.list_objects(dir_key + "/")
+    count = 0
     for f in files.object_list:
         key = f.key
         print(key)
         link = url4key(endpoint, bucket, key)
         append_link(soup, link)
-
+        count += 1
+    assert count
     html = soup.prettify()
     with open(file_path, "w+") as f:
         f.write(html)