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

mem0/llms/anthropic.py

@@ -4,7 +4,7 @@ from typing import Dict, List, Optional
 try:
     import anthropic
 except ImportError:
-   raise ImportError("The 'anthropic' library is required. Please install it using 'pip install anthropic'.")
+    raise ImportError("The 'anthropic' library is required. Please install it using 'pip install anthropic'.")
 
 from mem0.configs.llms.base import BaseLlmConfig
 from mem0.llms.base import LLMBase
@@ -43,8 +43,8 @@ class AnthropicLLM(LLMBase):
         system_message = ""
         filtered_messages = []
         for message in messages:
-            if message['role'] == 'system':
-                system_message = message['content']
+            if message["role"] == "system":
+                system_message = message["content"]
             else:
                 filtered_messages.append(message)
 
@@ -56,7 +56,7 @@ class AnthropicLLM(LLMBase):
             "max_tokens": self.config.max_tokens,
             "top_p": self.config.top_p,
         }
-        if tools: # TODO: Remove tools if no issues found with new memory addition logic
+        if tools:  # TODO: Remove tools if no issues found with new memory addition logic
             params["tools"] = tools
             params["tool_choice"] = tool_choice