diff --git a/examples/python/example.py b/examples/python/example.py
index 6d339f3..50716d9 100644
--- a/examples/python/example.py
+++ b/examples/python/example.py
@@ -5,6 +5,8 @@ def __init__(self, data):
         self.issues = [json.loads(l) for l in data.split('\n') if l.strip()]
 
 if __name__ == '__main__':
-    with open('../../dataset/vulns.json', 'r') as f:
-        db = VulnDb(f.read())
-    print("total issues: %d"%len(db.issues))
+    with open('../../dataset/vulns-1.json', 'r', encoding="utf-8") as f:
+        db1 = VulnDb(f.read())
+    with open('../../dataset/vulns-2.json', 'r', encoding="utf-8") as f:
+        db2 = VulnDb(f.read())
+    print("total issues: %d"%(len(db1.issues)+len(db2.issues)))