update for restructure

core/database.py

@@ -0,0 +1,14 @@
+from peewee import SqliteDatabase, Model, CharField, IntegerField, FloatField, BooleanField
+
+from core.logger import LogLevel, PrintLog
+from xtquant import xtconstant
+
+# 连接到SQLite数据库
+db = SqliteDatabase('example.db')
+
+db.connect()
+PrintLog(LogLevel.INFO, '- [成功]数据库连接')
+# 定义基础模型类
+class BaseModel(Model):
+    class Meta:
+        database = db