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deb http://ftp.de.debian.org/debian/ unstable main contrib non-free
deb ftp://ftp.nerim.net/debian-marillat/ testing main
...

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sources [
  ["deb", "http://ftp.de.debian.org/debian/", "unstable", ["main", "contrib", "non-free"]
  ["deb", "ftp://ftp.nerim.net/debian-marillat/", "testing" ["main"]
]

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str = "deb http://ftp.de.debian.org/debian/ unstable main contrib non-free"

def sourceLine2list(sourceLine):
    ok = sourceLine.split(" ", 3)
    ok[3] = ok[3].split(" ")
    return ok


print sourceLine2list(str)

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f = file("/etc/apt/sources.list", "r")
data = []
for line in f:
    entry = line.split("#")[0] # cut comment
    entry = entry.split(None,3)
    if entry: # skip empty or commented out entries
        entry[-1] = entry[-1].split() # split last item of entry
        data.append(entry)
f.close()
print data

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#!/usr/bin/env python
# -*- coding: utf-8 -*-

import time
import md5
import sys
import re

def create_unique_id(self):
	"""
	Creates an unique md5 hash
	"""
	return md5.new(str(time.time()+random.random())).hexdigest()


# CONFIG WRITERS AND READERS
class base_config_handle:
	def __init__(self, filename): 
		f = file(filename, "r")
		self._value = f.read()
		self._parsed = {}
		f.close()
		self._filename = filename
	def save(self):
		f = file(self._filename, "w")
		f.write(self.string_output())
		f.close()
	def parse(self): pass
	def string_output(self): return self._value

# CONFIG HANDLE FOR DEBIAN SOURCES LIST
class apt_config_handle(base_config_handle):
	def parse(self):
		data = []
		lines = self._value.split("\n")
		for line in lines:
			entry = line.split("#")[0]
			entry = entry.split(None,3)
			if entry:
				entry[-1] = entry[-1].split()
				data.append(entry)
		self._value = data
	def string_output(self):
		str = ""
		for item in self._value:
			line = " ".join([item[0], item[1], item[2]])+" "+" ".join(item[3])
			str += line+"\n"
		return str

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def slparser(source="/etc/apt/sources.list"):
    sl = file(source, 'r')
    servers = []
    for line in sl:
        entry= line.splitlines()[0]
        if line.startswith("deb"):
            entry = entry.split(None, 3)
            try:
                entry[3] = entry[3].split()
            except IndexError:
                # Diese Zeile hat keine Auswahl zwischen main, contrib oder non-free
                pass
            servers.append(entry)
    
    sl.close()
    return servers

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deb http://192.168.123.1/debian stable main
deb http://192.168.123.1/webmin ./
deb http://192.168.123.1/squid ./
deb http://ftp.de.debian.org/debian/ unstable main contrib non-free


# deb http://security.debian.org/ stable/updates main