Flask Upload Server

#!/usr/bin/env python
# -*- coding: utf-8 -*-

import os
from flask import Flask, request, redirect, url_for, send_from_directory, render_template
import mimetypes

ALLOWED_EXTENSIONS = set(['png', 'jpg', 'jpeg', 'gif'])
UPLOAD_FOLDER = os.path.abspath(os.path.dirname(__name__))

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


def get_mimetype(filename):
    return mimetypes.guess_type(filename)[0]


def allowed_file(filename):
    return '.' in filename and \
           filename.rsplit('.', 1)[1] in ALLOWED_EXTENSIONS


@app.route('/', methods=['GET', 'POST'])
def get_file():
    if request.method == 'POST':
        myfile = request.files.getlist('files')
        for file in myfile:
            if file and allowed_file(file.filename):
                filename = file.filename
                file.save(os.path.join(app.config['UPLOAD_FOLDER'], filename))
        return redirect(url_for('uploaded_file', filename=filename))
    return render_template('index.html')


@app.route('/uploads/<filename>')
def uploaded_file(filename):
    return send_from_directory(app.config['UPLOAD_FOLDER'],
                               filename)

if __name__ == '__main__':
    app.run(debug=True)