add an explanatory note sdk.py 17

ShaShengYang · ShaShengYang · commit e44755508421 · 2023-09-23T13:02:57.000+08:00
diff --git a/zoomeye/sdk.py b/zoomeye/sdk.py
@@ -14,7 +14,7 @@
 
 import requests
 
-import graphviz
+import graphviz  # Attention!
 
 fields_tables_host = {
     "ip": "ip",
