完成大作业服务端代码，新建管理端，管理端不可用

Project/Service/func/index.py

@@ -0,0 +1,18 @@
+from flask import render_template, request, g, redirect, url_for, session
+from .config import slideshow_images
+from .utils import get_cities
+
+def index():
+    if request.method == 'GET':
+        if not g.user:
+            return redirect(url_for("login"))
+        images = slideshow_images
+        return render_template(
+            'index.html', cities=get_cities(), 
+            images=images, username=g.name
+        )
+
+def logout():
+    session.clear()
+    session.pop('user_id', None)
+    return redirect(url_for('login'))