diff --git a/班长后端/data_processing.py b/班长后端/data_processing.py
index e69de29..fc8435a 100644
--- a/班长后端/data_processing.py
+++ b/班长后端/data_processing.py
@@ -0,0 +1,12 @@
+from utils.nlp_utils import CallsignExtractor
+
+# 测试样例
+extractor = CallsignExtractor()
+sample_texts = [
+    "Jade23 requesting descent to FL180",
+    "Tower, Snowbird inbound with info Q",
+    "Speedbird 123 cleared direct to WP"
+]
+
+for text in sample_texts:
+    print(f"文本: {text} → 呼号: {extractor.extract(text)}")
\ No newline at end of file
diff --git a/班长后端/data_tosql.py b/班长后端/data_tosql.py
index 4172536..0d6c52d 100644
--- a/班长后端/data_tosql.py
+++ b/班长后端/data_tosql.py
@@ -1,3 +1,4 @@
+
 import pandas as pd
 from sqlalchemy import create_engine, text