我在燒瓶中實現了簡單的應用程序。我也可以獲取數據并處理它，但是如何獲得隨機創建的文件夾。在此應用程序中，我嘗試將一些數據輸入到文本區域。單擊“導出甲板”按鈕后，數據將發布到燒瓶中。我也可以獲取數據并生成牌組，但無法發送生成的牌組文件或重定向到隨機文件夾。我收到以下錯誤。raise TypeError(TypeError: The view function did not return a valid response. The function either returned None or ended without a return statement.)那么，我該如何實現呢？重定向到新的隨機生成的文件夾或將生成的文件作為下載鏈接發送。謝謝app.pyfrom flask import Flask, render_template, request, redirect, url_for, flash, send_file, send_from_directoryimport image_occ_deck_exportimport random, osapp = Flask(__name__)app.config["CACHE_TYPE"] = "null"@app.route("/", methods=["GET","POST"])def home():    if request.method == "POST":        print(request.form['notes'])        notes = request.form['notes']        # random folder        data = request.form['notes']        print(data)        random_f = random.randrange(1 << 30, 1 << 31)        create_random_folder(random_f, data)    else:        return render_template("index.html")        def create_random_folder(random_f, data):    directory = str(random_f)    parent_dir = "static/uploads/"    path = os.path.join(parent_dir, directory)    if not os.path.exists(path):        os.mkdir(path)    random_file = directory + ".txt"    random_deck_name = directory + ".apkg"    file_loc = path + "/" + random_file    deck_loc = path + "/" + random_deck_name    with open(file_loc, 'w') as f:        f.write(str(data))    image_occ_deck_export.exportDeck(file_loc, deck_loc)    return redirect(url_for('uploaded', path=path))@app.route('/uploaded/<path>', methods=['GET'])def uploaded():    return render_template("upload.html")if __name__ == "__main__":    app.run(debug=False)