Procurar arquivos MP3 e gerar playlist
Esse foi meu primeiro script Python. A idéia é poder digitar toca white stripes na linha de comando do Linux ou MiniCli, e o XMMS abriria com uma playlist com todos arquivos mp3 que tivessem essas palavras-chave. Também é possível usar esse script no Windows, basta mudar as variáveis root_folder e player apropriadamente (algo como c:\\my documents\\mp3 e c:\\arquivos de programas\\winamp\\winamp.exe, respectivamente).
Boa sorte, e me contate caso tenha alguma dúvida. Também estou aberto a sugestões pra melhorar esse script. Ainda tem algumas coisas com cara de C e Java no código, mas aos poucos to me acostumando com o "estilo Python" 
Código
"""
Usage: toca <options> <keywords> ....
Searches all mp3 files with the _all_ specified keywords, generates a playlist
and execute it.
It accepts the same options as winamp or xmms, such as -e to enqueue, and
-s for shuffle. Actually the options are simply passed forward to the player
so all the xmms/winamp options are available
"""
import sys
import string
import os
# -------- configuration options ------------
root_folder = "/windows/E/mp3" #change this to your mp3 root folder....
player = "xmms" #at windows might be something like c:\\program files\\winamp\\winamp.exe
playlist_filename = "playlist.m3u"
def findFiles(directory,keylist):
"""
Gets a list of files in the directory (and subdirectories)
with contains all the keywords in 'keylist' at the filename
"""
filenames = []
for (path,dname,fnames) in os.walk(directory):
for filename in fnames:
#for each filename, check if it contains all the keywords
for keyword in keylist:
if not keyword in string.lower(filename):
break
else:
#all keywords were found: add to the result list
filenames.append(os.path.join(path, filename))
return filenames
def makePlaylist(fileList):
"""
Generates a playlist file for the filenames at fileList
"""
playlist = open(playlist_filename,"w") #create the file
playlist.write("#EXTM3U\n") #add the standard header
for file in fileList:
playlist.write(file + "\n") #add the items
playlist.close
def playIt(opt):
"""
Execute the playlist.
"""
opt = " ".join(opt)
command = " ".join([player,opt,playlist_filename,"&"])
os.popen(command)
if __name__ == "__main__":
print "-" * 60
if len(sys.argv) == 1: #if no keyword was entered, give the user a nice tip...
print "Dude, you should enter a keyword to search the mp3's."
print "Something like 'toca radiohead'"
else:
sys.argv = sys.argv[1:]
#get any options (starting with '-') the user might have entered
#these options will simply be passed forward to the player
#one common option is -e to enqueue the songs instead of creating
#a brand new playlist
opt = [x for x in sys.argv if x[0] == "-"]
#get the keywords to search for the mp3s
keylist = [x for x in sys.argv if x not in opt]
print "Looking for mp3 files with the keyword(s)..."
print keylist
files = findFiles(root_folder,keylist)
if files:
print "Finished! Found " + str(len(files)) + " file(s). So, let's play!"
makePlaylist(files)
playIt(opt)
else:
print "Didn't find anything :-( Did you mispell it?"
print "-" * 69
Para usar
Renomeie o arquivo para toca, dê um chmod +x toca e copie para um diretório no seu PATH, por exemplo /opt/kde3. Então basta digitar $ toca <palavras-chave>. Pode usar quantas palavras quiser, para tornar a busca mais precisa (por exemplo, toca beatles let it be. Quaisquer opcões iniciadas com um "-" são passadas pro player, por exemplo "-e" para colocar as músicas na fila da playlist atual (enqueue) e "-s" para shuffle.
