优化预测函数，修正获取最后一天指数值的逻辑，移除冗余代码

blkeras.py

@@ -226,6 +226,12 @@ def predict(text: str, stock_codes: list):
         #print("Stock Predictions:", stock_predictions)
 
 
+        # 获取 index_feature 中最后一天的第一个值
+        last_index_inx_value = previous_stock_inx_index_history[0][-1][0]
+        last_index_dj_value = previous_stock_dj_index_history[0][-1][0]
+        last_index_ixic_value = previous_stock_ixic_index_history[0][-1][0]
+        last_index_ndx_value = previous_stock_ndx_index_history[0][-1][0]
+
 
         # 针对 1012 模型的修复
         stock_predictions = stock_fix_for_1012_model(float(X_sentiment[0][0]), stock_predictions[0], previous_stock_history[0][-1][0])
@@ -242,12 +248,6 @@ def predict(text: str, stock_codes: list):
 
 
 
-        # 获取 index_feature 中最后一天的第一个值
-        last_index_inx_value = previous_stock_inx_index_history[-1][0]
-        last_index_dj_value = previous_stock_dj_index_history[-1][0]
-        last_index_ixic_value = previous_stock_ixic_index_history[-1][0]
-        last_index_ndx_value = previous_stock_ndx_index_history[-1][0]
-
         # 提取 Index Predictions 中每一天的第一个值
         index_inx_day_1 = index_inx_predictions[0][0]
         index_inx_day_2 = index_inx_predictions[1][0]