[Python] pytube taking weird amount of time

So when I run Pytube inside the script, it takes 30 seconds to finish, but when I run it in a function, it only takes 0.96 seconds to finish. Why is that? Can someone explain it in simple terms because I am new to Python?

here it took only 0.96 seconbds to finish "inside a function"

here it took 30s to finish in a normal line

and do the function really get all the videos? cuz i print the random index and its give me a small number like 60 from 3000 videos here is the script


import pytube
import time
StarterTick = time.time()
print(StarterTick,type(StarterTick))
VideoList = "list=PLKB9puQeauyBTnMmRWsB4VVfbbWR0tKCc"
PlayList = f"https://www.youtube.com/playlist?{VideoList}"

def getRandomVideo():
PlayListVideos = pytube.contrib.playlist.Playlist(PlayList,)
randomIndex = random.randint(0,len(PlayList) -1) # -1 cuz list start with 0 so if we have 5 items it would be 4 but len would return 5
print(f"your random index is {randomIndex}")
return PlayListVideos[randomIndex] # just return a random video from youtube list


# this way it takes 30 s to finish PlayListVideos = pytube.contrib.playlist.Playlist(PlayList)

print(f"here is your random Video {getRandomVideo()}")
print("programm finished")
print(f"THe programm took {time.time() - StarterTick:>3.2f} seconds to finish")

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