#This is a pretty weird script, it gets lines of text from somewhere
#And it makes a playlist, to keep the amount of tracks loosely connected
#To the amount of text.
import sys
from subprocess import Popen, PIPE

magic = sys.stdin.readlines()
lines = []

for line in magic:
    lines.append(line)

pfind = Popen(["find", "/media/mp3" ], stdout=PIPE)
pgrep = Popen(["grep", "mp3"], stdin=pfind.stdout, stdout=PIPE)
pfind.stdout.close()  # Allow pfind to receive a SIGPIPE if pgrep exits.

pshuf = Popen(["shuf", "-n {0}".format(len(lines))], stdin=pgrep.stdout)
pgrep.stdout.close()