Serve a random image from imgfolder on /random_image endpoint

slider.py

@@ -1,7 +1,9 @@
 #!/usr/bin/python3
 
-from flask import Flask, render_template, send_from_directory
+from flask import Flask, render_template, send_from_directory, redirect, url_for
 from random import randint
+from os import listdir
+import random
 
 import config
 
@@ -13,6 +15,12 @@ def hello():
     return render_template("hello.html", num=randint(1, 23))
 
 
+@app.route("/random_image")
+def random_image():
+    filename = random.choice(listdir(config.imgdir))
+    return redirect(url_for("image", filename=filename))
+
+
 @app.route("/img/<path:filename>")
 def image(filename):
     return send_from_directory(config.imgdir, filename)