@app.route('/upload', methods=['GET', 'POST'])
def upload():
    if request.method == 'POST' and 'photo' in request.files:
            if not patch_request_class(app, size=1000 * 33):
                error = "Please check file size"
                return render_template('upload.html', error=error)
            else:
                filename = photos.save(request.files['photo'])
                flash('file {0} uploaded successfully'.format(filename))
                return render_template('upload.html')
    return render_template('upload.html')