修改模型训练数据源日期

utils.py

@@ -17,7 +17,7 @@ def get_date():
     month = now.month
     day = now.day
     date = datetime(year,month,day)
-    data_start_date = (date - timedelta(days=5)).strftime("%Y-%m-%d")
+    data_start_date = (date - timedelta(days=3)).strftime("%Y-%m-%d")
     data_end_date = (date - timedelta(days=1)).strftime("%Y-%m-%d")
     validation_date = (date - timedelta(days=2)).strftime("%Y-%m-%d")
     # 验证集和测试集的日期必须相差一天，否则切割数据集时会报错