hello.py

import os
from flask import Flask, render_template, request, redirect, url_for, send_from_directory
from werkzeug import secure_filename

UPLOAD_FOLDER = 'uploaded'
ALLOWED_EXTENSIONS = set(['html'])

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

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

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

@app.route('/upload', methods=['GET', 'POST'])
def upload_file():
    filename = ""
    if request.method == 'POST':
        file = request.files['file']
        if file and allowed_file(file.filename):
            filename = secure_filename(file.filename)
            file.save(os.path.join(app.config['UPLOAD_FOLDER'], filename))
    return render_template('upload.html', filename=filename)
	
@app.route('/uploaded/<filename>')
def uploaded_file(filename):
    return send_from_directory(app.config['UPLOAD_FOLDER'],
                               filename)
	
if __name__ == '__main__':
    app.run(debug=True)