How to get path of all uploaded files in Flask

import os
from flask import Flask
from flask import (
    jsonify,
    render_template,
    request,
    url_for
)
from datetime import date
from random import randint
from werkzeug.utils import secure_filename

app = Flask(__name__)
app.config['UPLOAD_FOLDER'] = app.static_folder

@app.route('/')
def index():
    return render_template('index.html')

def allowed_file(filename):
    # Your validation code here!
    return True

@app.route('/upload', methods=['POST'])
def upload():
    errors = {}
    data = []
    prefix = f'SWM-{randint(10,900)}-{date.today()}'
    files = request.files.getlist('files')
    for file in files:
        if file.filename != '' and allowed_file(file.filename):
            filename = secure_filename(file.filename)
            filename = f'{prefix}-{filename}'
            file.save(os.path.join(
                app.config['UPLOAD_FOLDER'],
                filename
            ))
            data.append({ 'url': filename })
        else:
            errors[file.filename] = 'File type is not allowed'

    return jsonify({
        'message': 'An error has occurred.' if errors else 'Files successfully uploaded',
        'errors': errors,
        'data': data
    }), 400 if errors else 200