fix: pass lint

Signed-off-by: OxalisCu <2127298698@qq.com>

pymilvus/bulk_writer/buffer.py

@@ -291,7 +291,7 @@ def _persist_parquet(self, local_path: str, **kwargs):
     def _persist_csv(self, local_path: str, **kwargs):
         sep = self._config.get("sep", ",")
         nullkey = self._config.get("nullkey", "")
-        
+
         header = list(self._buffer.keys())
         df = pd.DataFrame(columns=header)
         for k, v in self._buffer.items():
@@ -305,7 +305,13 @@ def _persist_csv(self, local_path: str, **kwargs):
             # so 1. whether make sure that arr of type (BINARY_VECTOR, FLOAT_VECTOR, FLOAT16_VECTOR, BFLOAT16_VECTOR) is a LIST,
             #    2. or convert arr into a string using json.dumps(arr) first and then add it to df
             # I choose method 2 here
-            if field_schema.dtype in {DataType.JSON, DataType.ARRAY, DataType.SPARSE_FLOAT_VECTOR, DataType.BINARY_VECTOR, DataType.FLOAT_VECTOR}:
+            if field_schema.dtype in {
+                DataType.JSON,
+                DataType.ARRAY,
+                DataType.SPARSE_FLOAT_VECTOR,
+                DataType.BINARY_VECTOR,
+                DataType.FLOAT_VECTOR,
+            }:
                 dt = np.dtype("str")
                 arr = []
                 for val in v: