How do you execute external programs from Python?
Carl
phleum_nospam at chello.se
Thu Nov 25 13:39:10 EST 2004
Hi,
I have this little code snippet that I use for recording audio streams. My
problem is that I want to schedule my recordings with crontab. This does
not work, however. I cannot figure out why; my code works fine when run
manually from the command prompt.
On final thing: What would be the best way to turn off the recording?
Can someone help me?
Carl
Here is my code:
import time
import os
import shutil
URL = "http://www.jazzandblues.org/listen/links/kkjz1.ram"
def RecordURL(what = "KKJZ"):
str_mplayer = "mplayer -playlist " + URL
str_mplayer += " -ao pcm -aofile "
str_mplayer += what + ".wav" + " -vc dummy -vo null"
os.system(str_mplayer)
def CreateOGG(what = "KKJZ"):
ogg_file = what + ".ogg"
str_oggenc = "oggenc " + what + ".wav"
os.system(str_oggenc)
def CreateMP3(what = "KKJZ"):
mp3_file = what + ".mp3"
str_lame = "lame " + what + ".wav " + mp3_file
os.system(str_lame)
def DeleteWAV(what = "KKJZ"):
wav_file = what + ".wav"
str_rm = "rm " + wav_file
os.system(str_rm)
def DateTag(what = "KKJZ"):
local_time = time.asctime(time.localtime())
for local_file in [ what + ".ogg", what + ".mp3" ]:
length = len(local_file)
local_file_copy = local_file[: length - 4] + "_" + local_time + "."
+ local_file[length - 3 :]
shutil.copy(local_file, local_file_copy)
RecordURL()
## CreateOGG()
## CreateMP3()
## DeleteWAV()
## DateTag()
Here is my crontab entry:
30 * * * * python -c "import os; os.chdir('/home/alpha/mymusic/P2/Jazz/');
import KKJZ"
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