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#
# /etc/rc.conf - Main Configuration for Arch Linux
#

# -----------------------------------------------------------------------
# LOCALIZATION
# -----------------------------------------------------------------------
LOCALE="ru_RU.UTF-8"
HARDWARECLOCK="localtime"
TIMEZONE="Europe/Moscow"
KEYMAP="us"
CONSOLEFONT=ter-u16b
CONSOLEMAP=
USECOLOR="yes"

# -----------------------------------------------------------------------
# HARDWARE
# -----------------------------------------------------------------------
MOD_AUTOLOAD="yes"
MODULES=()

# Scan for LVM volume groups at startup, required if you use LVM
USELVM="no"

# -----------------------------------------------------------------------
# NETWORKING
# -----------------------------------------------------------------------
HOSTNAME="myhost"
interface=eth0
address=
netmask=
gateway=

# -----------------------------------------------------------------------
# DAEMONS
# -----------------------------------------------------------------------
DAEMONS=(syslog-ng @network ntpd crond dbus sshd samba transmissiond)

#!/usr/bin/python
# parse_rc.conf.py
import configparser

class FakeSecHead(object):
    def __init__(self, fp):
        self.fp = fp
        self.sechead = '[asection]\n'
    def readline(self):
        if self.sechead:
            try: return self.sechead
            finally: self.sechead = None
        else: return self.fp.readline()

config = configparser.SafeConfigParser()
config.readfp(FakeSecHead(open('rc.conf')))
config.items('asection')

[aivs@myhost python]$ ./parse_rc.conf.py 
Traceback (most recent call last):
  File "./parse_rc.conf.py", line 16, in <module>
    config.readfp(FakeSecHead(open('rc.conf')))
  File "/usr/lib/python3.2/configparser.py", line 753, in readfp
    self.read_file(fp, source=filename)
  File "/usr/lib/python3.2/configparser.py", line 708, in read_file
    self._read(f, source)
  File "/usr/lib/python3.2/configparser.py", line 994, in _read
    for lineno, line in enumerate(fp, start=1):
TypeError: 'FakeSecHead' object is not iterable
[aivs@myhost python]$

import configparser

parser = configparser.SafeConfigParser()
parser.read_string("[section]\n" + open('rc.conf').read())
print(parser.items('section'))

#!/usr/bin/python
# parse_rc.conf.py
import configparser

config = configparser.SafeConfigParser()
config.read_string("[section]\n" + open('rc.conf').read())
config.set('section', 'gateway', '192.168.1.1')
with open('rc.conf', 'w') as configfile:
    config.write(configfile)

[section]
locale = "ru_RU.UTF-8"
hardwareclock = "localtime"
timezone = "Europe/Moscow"
keymap = "us"
consolefont = ter-u16b
consolemap = 
usecolor = "yes"
mod_autoload = "yes"
modules = ()
uselvm = "no"
hostname = "myhost"
interface = eth0
address = 
netmask = 
gateway = 192.168.1.1
daemons = (syslog-ng @network ntpd crond dbus sshd samba transmissiond)

# Комментарий
Параметр_1 = значение_1
Параметр_2 = значение_2