[Misc] Lint code and fix code smells (#1871)

mem0/configs/vector_stores/milvus.py

@@ -1,22 +1,24 @@
 from enum import Enum
-from typing import Dict, Any
-from pydantic import BaseModel, model_validator, Field
+from typing import Any, Dict
+
+from pydantic import BaseModel, Field, model_validator
 
 
 class MetricType(str, Enum):
     """
     Metric Constant for milvus/ zilliz server.
     """
+
     def __str__(self) -> str:
         return str(self.value)
-    
+
     L2 = "L2"
-    IP  = "IP"
-    COSINE  = "COSINE"
-    HAMMING  = "HAMMING"
-    JACCARD  = "JACCARD"
-    
-    
+    IP = "IP"
+    COSINE = "COSINE"
+    HAMMING = "HAMMING"
+    JACCARD = "JACCARD"
+
+
 class MilvusDBConfig(BaseModel):
     url: str = Field("http://localhost:19530", description="Full URL for Milvus/Zilliz server")
     token: str = Field(None, description="Token for Zilliz server / local setup defaults to None.")
@@ -38,4 +40,4 @@ class MilvusDBConfig(BaseModel):
 
     model_config = {
         "arbitrary_types_allowed": True,
-    }
+    }