成绩模块+课程模块

dao/course_dao.py

@@ -0,0 +1,24 @@
+from model.course_model import Course
+
+
+def add_course_dao(o, db):
+    try:
+        c = Course(**o)
+        db.add(c)
+    except:
+        db.rollback()
+        return False
+    else:
+        db.commit()
+        return True
+
+
+def get_all_courses_dao(db):
+    return db.query(Course).filter(Course.is_deleted == 0).all()
+
+
+def get_course_by_id_dao(course_id, db):
+    return db.query(Course).filter(
+        Course.course_id == course_id,
+        Course.is_deleted == 0
+    ).first()