Raspberry Pi, Python 2 Music player from RadioJavan, Controlled by a Flask Webserver

functions.py

import requests, json, os, subprocess, vlc, sys
from os.path import basename
def mp3fromURL(url):
    """
    Catch MP3 file from spotify share url.
    """
    try:
        print "Downloading MP3 File ..."
        response = requests.get("http://receiverdl.com/api/extract/action.php?link=" + url + "&isNoFilter=1")
        #response = """{"status":"ok","message":"it's ok","groups":[{"title":"Musics","items":[{"title":"Imagine Dragons - Believer.mp3","link":"http:\/\/receiverdl.com\/api\/extract\/music\/Imagine%20Dragons%20-%20Believer.mp3"}]}]}"""
        print "Got the information"
        jdat = json.loads(response.text)
        #jdat = json.loads(response)
        mp3url = jdat['groups'][0]['items'][0]['link']
        mp3filename = jdat['groups'][0]['items'][0]['title']
        if mp3filename == "MP3":
            mp3filename = basename(mp3url)
        if os.path.isfile('mp3files/' + mp3filename):
            print "File already exist"
            p = vlc.MediaPlayer("file:////home/pi/Desktop/smartTV/mp3files/" + mp3filename)
            p.play()
            print "\nPlayed!"
            return p
        print "File doesn\'t exist", "Downloading it"
        # ------------------ download and save part
        #mp3response = requests.get(mp3url)
        with open("mp3files/" + mp3filename, "wb") as mp3file:
            #mp3file.write(mp3response.content)
            #mp3file.close()
            mp3response = requests.get(mp3url, stream=True)
            total_length = mp3response.headers.get('content-length')
            if total_length == "0":
                print "File cannot be downloaded. the lenght is 0"
                return False
            if total_length is None: # no content length header
                mp3file.write(mp3response.content)
            else:
                dl = 0
                total_length = int(total_length)
                for data in mp3response.iter_content(chunk_size=4096):
                    dl += len(data)
                    mp3file.write(data)
                    done = int(50 * dl / total_length)
                    #sys.stdout.write("\r[%s%s] - %s" % ('=' * done, ' ' * (50-done), done*2) )
                    sys.stdout.write("\r[{}{}] - {}%".format('=' * done, ' ' * (50-done), done*2) )
                    sys.stdout.flush()
        # ------------------ download and save part
        p = vlc.MediaPlayer("file:////home/pi/Desktop/smartTV/mp3files/" + mp3filename)
        p.play()
        print "\nPlayed!"
        return p
    except Exception as e:
        print e
        return False

webserver.py

import subprocess, time
import functions as funcs

from flask import Flask, request

app = Flask(__name__)
# ------------------- config
global playing
playing = False
# ------------------- config

@app.route("/")
def dd():
	return "running"
@app.route("/start")
def hello():
	gottenlink = request.args.get('url')
	if playing:
		return "error, file is already being played"
	global player
	player = funcs.mp3fromURL(gottenlink)
	if player:
		global playing
		playing = True
		return "started"
	return "error player is not started"

@app.route("/stop")
def stop():
	if playing:
		player.stop()
		global playing
		playing = False
	return "stopped"

@app.route("/seek")
def seektest():
	if playing:
		percentage = request.args.get('p')
		player.set_position(int(percentage)/100.0)
		return "set to " + str(int(percentage)/100.0)
	return "not playing"

if __name__ == '__main__':
    	app.run("0.0.0.0", debug=True)