Refactor requirements and code formatting

- Simplified requirements.txt by removing specific version constraints
- Added comment about extra library installation using pipmaster
- Improved code formatting in base.py, operate.py, and postgres_impl.py
- Cleaned up SQL templates and query method signatures with consistent formatting

lightrag/operate.py

@@ -893,7 +893,9 @@ async def mix_kg_vector_query(
             # Reduce top_k for vector search in hybrid mode since we have structured information from KG
             mix_topk = min(10, query_param.top_k)
             # TODO: add ids to the query
-            results = await chunks_vdb.query(augmented_query, top_k=mix_topk, ids = query_param.ids)
+            results = await chunks_vdb.query(
+                augmented_query, top_k=mix_topk, ids=query_param.ids
+            )
             if not results:
                 return None
 
@@ -1102,7 +1104,9 @@ async def _get_node_data(
         f"Query nodes: {query}, top_k: {query_param.top_k}, cosine: {entities_vdb.cosine_better_than_threshold}"
     )
 
-    results = await entities_vdb.query(query, top_k=query_param.top_k, ids = query_param.ids)
+    results = await entities_vdb.query(
+        query, top_k=query_param.top_k, ids=query_param.ids
+    )
 
     if not len(results):
         return "", "", ""
@@ -1357,7 +1361,9 @@ async def _get_edge_data(
         f"Query edges: {keywords}, top_k: {query_param.top_k}, cosine: {relationships_vdb.cosine_better_than_threshold}"
     )
 
-    results = await relationships_vdb.query(keywords, top_k = query_param.top_k, ids = query_param.ids)
+    results = await relationships_vdb.query(
+        keywords, top_k=query_param.top_k, ids=query_param.ids
+    )
 
     if not len(results):
         return "", "", ""
@@ -1606,7 +1612,9 @@ async def naive_query(
     if cached_response is not None:
         return cached_response
 
-    results = await chunks_vdb.query(query, top_k=query_param.top_k, ids = query_param.ids)
+    results = await chunks_vdb.query(
+        query, top_k=query_param.top_k, ids=query_param.ids
+    )
     if not len(results):
         return PROMPTS["fail_response"]