from random import randrange, seed

from datetime import datetime

class Video:

def __init__(self, artist, title, duration):

self.artist = artist

self.title = title

self.duration = duration

def __str__(self):

return f"{self.artist} - {self.title} ({self.duration})"

class Playlist:

def __init__(self, title, descr, duration, videos):

self.title = title

self.descr = descr

self.duration = duration

self.videos = videos

def __str__(self):

st = f"{self.title} ({self.descr}). Duration: {self.duration}"

st += "\n" + "-" * 20

for video in self.videos:

st += "\n" + str(video)

return st

def add_video(self, video):

self.videos += [video]

def recommendation(self):

return f"I recommend: {self.videos[randrange(len(self.videos))]}"

class ClassicalPlaylist(Playlist):

def __init__(self, title, descr, duration, videos, period):

super().__init__(title, descr, duration, videos)

self.period = period

def recommendation(self):

return f"I recommend: {self.videos[0]} !!"

seed(datetime.now())

p = Playlist("Zouzounia","Paidika tragoudia", "45.18",

[Video("ZouzTV", "Xarwpa ta dio mou xeria ta xtipw", "03.22"), Video("ZouzTv", "Magia i melissa", "04.17")])

print(p)

print(p.recommendation())

c = ClassicalPlaylist("Beethoven No.9", "", "88.13",

[Video("Beethoven", "Track 01", "03.22"),

Video("Beethoven", "Track 02", "04.17")], "baroque")

print(c)

print(c.recommendation())