python to download youtbe music as mp3

youtube2mp3.py

# require
# https://ffmpeg.org/download.html
# to convert to .mp3

from __future__ import unicode_literals
import youtube_dl

class MyLogger(object):
    def debug(self, msg):
        pass

    def warning(self, msg):
        pass

    def error(self, msg):
        print(msg)

def my_hook(d):
    if d['status'] == 'finished':
        print('Done downloading, now converting ...')

inputed_url = input("enter url:")
ydl_opts = {
    'format': 'bestaudio/best',
    'postprocessors': [{
    'key': 'FFmpegExtractAudio',
    'preferredcodec': 'mp3',
    'preferredquality': '192',
    }],
    'logger': MyLogger(),
    'progress_hooks': [my_hook],
}

with youtube_dl.YoutubeDL(ydl_opts) as ydl:
    ydl.download([inputed_url])