fix: Fix the mypy check error (#1373)

Co-authored-by: yyhhyy <95077259+Hui824@users.noreply.github.com>
Co-authored-by: aries_ckt <916701291@qq.com>
Co-authored-by: Fangyin Cheng <staneyffer@gmail.com>

.github/workflows/pylint.yml

@@ -27,3 +27,5 @@ jobs:
       run: make setup
     - name: Check Python code style
       run: make fmt-check
+    - name: Check Python code type
+      run: make mypy

dbgpt/app/knowledge/service.py

@@ -444,7 +444,13 @@ class KnowledgeService:
         if len(spaces) == 0:
             raise Exception(f"delete error, no space name:{space_name} in database")
         space = spaces[0]
-        config = VectorStoreConfig(name=space.name)
+        embedding_factory = CFG.SYSTEM_APP.get_component(
+            "embedding_factory", EmbeddingFactory
+        )
+        embedding_fn = embedding_factory.create(
+            model_name=EMBEDDING_MODEL_CONFIG[CFG.EMBEDDING_MODEL]
+        )
+        config = VectorStoreConfig(name=space.name, embedding_fn=embedding_fn)
         vector_store_connector = VectorStoreConnector(
             vector_store_type=CFG.VECTOR_STORE_TYPE,
             vector_store_config=config,

dbgpt/storage/vector_store/milvus_store.py

@@ -174,7 +174,10 @@ class MilvusStore(VectorStoreBase):
             bytes_str = self.collection_name.encode("utf-8")
             hex_str = bytes_str.hex()
             self.collection_name = hex_str
-
+        if vector_store_config.embedding_fn is None:
+            # Perform runtime checks on self.embedding to
+            # ensure it has been correctly set and loaded
+            raise ValueError("embedding_fn is required for MilvusStore")
         self.embedding: Embeddings = vector_store_config.embedding_fn
         self.fields: List = []
         self.alias = milvus_vector_config.get("alias") or "default"